15557115044 has 12 divisors (see below), whose sum is σ = 27686391600. Its totient is φ = 7646717448.

The previous prime is 15557115037. The next prime is 15557115109. The reversal of 15557115044 is 44051175551.

It is a super-2 number, since 2×15557115044² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15557114989 and 15557115007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32959754 + ... + 32960225.

It is an arithmetic number, because the mean of its divisors is an integer number (2307199300).

Almost surely, 2^15557115044 is an apocalyptic number.

It is an amenable number.

15557115044 is a deficient number, since it is larger than the sum of its proper divisors (12129276556).

15557115044 is a wasteful number, since it uses less digits than its factorization.

15557115044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65920042 (or 65920040 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 38.

The spelling of 15557115044 in words is "fifteen billion, five hundred fifty-seven million, one hundred fifteen thousand, forty-four".