Search a number
-
+
12915855013 = 83211737501
BaseRepresentation
bin11000000011101100…
…00100111010100101
31020100010110102020111
430001312010322211
5202422424330023
65533343333021
7635031645655
oct140166047245
936303412214
1012915855013
115528733046
1226055b1171
1312aab1ca79
148a7504365
15508d8000d
hex301d84ea5

12915855013 has 8 divisors (see below), whose sum is σ = 13133435616. Its totient is φ = 12699750000.

The previous prime is 12915854989. The next prime is 12915855037. The reversal of 12915855013 is 31055851921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12915854989) and next prime (12915855037).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12915855013 - 217 = 12915723941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12915855713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351238 + ... + 386263.

It is an arithmetic number, because the mean of its divisors is an integer number (1641679452).

Almost surely, 212915855013 is an apocalyptic number.

It is an amenable number.

12915855013 is a deficient number, since it is larger than the sum of its proper divisors (217580603).

12915855013 is an equidigital number, since it uses as much as digits as its factorization.

12915855013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737795.

The product of its (nonzero) digits is 54000, while the sum is 40.

The spelling of 12915855013 in words is "twelve billion, nine hundred fifteen million, eight hundred fifty-five thousand, thirteen".

Divisors: 1 83 211 17513 737501 61212583 155612711 12915855013