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12389345616 = 2434394671259
BaseRepresentation
bin10111000100111011…
…00110100101010000
31011222102201222010110
423202131212211100
5200333133024431
65405214401320
7616006462104
oct134235464520
934872658113
1012389345616
11528850a80a
122499200240
131225a1574b
1485760b904
154c7a2c346
hex2e2766950

12389345616 has 80 divisors (see below), whose sum is σ = 32172940800. Its totient is φ = 4108285824.

The previous prime is 12389345611. The next prime is 12389345621. The reversal of 12389345616 is 61654398321.

It is an interprime number because it is at equal distance from previous prime (12389345611) and next prime (12389345621).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12389345611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9839995 + ... + 9841253.

It is an arithmetic number, because the mean of its divisors is an integer number (402161760).

Almost surely, 212389345616 is an apocalyptic number.

12389345616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12389345616 is an abundant number, since it is smaller than the sum of its proper divisors (19783595184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12389345616 is a wasteful number, since it uses less digits than its factorization.

12389345616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176 (or 2170 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The spelling of 12389345616 in words is "twelve billion, three hundred eighty-nine million, three hundred forty-five thousand, six hundred sixteen".

Divisors: 1 2 3 4 6 8 12 16 24 48 439 467 878 934 1259 1317 1401 1756 1868 2518 2634 2802 3512 3736 3777 5036 5268 5604 7024 7472 7554 10072 10536 11208 15108 20144 21072 22416 30216 60432 205013 410026 552701 587953 615039 820052 1105402 1175906 1230078 1640104 1658103 1763859 2210804 2351812 2460156 3280208 3316206 3527718 4421608 4703624 4920312 6632412 7055436 8843216 9407248 9840624 13264824 14110872 26529648 28221744 258111367 516222734 774334101 1032445468 1548668202 2064890936 3097336404 4129781872 6194672808 12389345616