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12381709360 = 245154771367
BaseRepresentation
bin10111000100000000…
…11110010000110000
31011221220101000011011
423202000132100300
5200324204144420
65404343000304
7615554536006
oct134200362060
934856330134
1012381709360
115284174559
122496739094
131224270a57
148565c0a76
154c701e95a
hex2e201e430

12381709360 has 20 divisors (see below), whose sum is σ = 28787474448. Its totient is φ = 4952683712.

The previous prime is 12381709339. The next prime is 12381709363. The reversal of 12381709360 is 6390718321.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (12381709363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77385604 + ... + 77385763.

Almost surely, 212381709360 is an apocalyptic number.

12381709360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12381709360 is an abundant number, since it is smaller than the sum of its proper divisors (16405765088).

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

12381709360 is a wasteful number, since it uses less digits than its factorization.

12381709360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154771380 (or 154771374 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 12381709360 in words is "twelve billion, three hundred eighty-one million, seven hundred nine thousand, three hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 154771367 309542734 619085468 773856835 1238170936 1547713670 2476341872 3095427340 6190854680 12381709360