13015756556 has 54 divisors (see below), whose sum is σ = 25220086164. Its totient is φ = 5873181600.

The previous prime is 13015756547. The next prime is 13015756591. The reversal of 13015756556 is 65565751031.

13015756556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13015756556² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11929571 + ... + 11930661.

Almost surely, 2^13015756556 is an apocalyptic number.

It is an amenable number.

13015756556 is a deficient number, since it is larger than the sum of its proper divisors (12204329608).

13015756556 is a wasteful number, since it uses less digits than its factorization.

13015756556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 472500, while the sum is 44.

The spelling of 13015756556 in words is "thirteen billion, fifteen million, seven hundred fifty-six thousand, five hundred fifty-six".