15561612152 has 16 divisors (see below), whose sum is σ = 29181845160. Its totient is φ = 7779786784.

The previous prime is 15561612091. The next prime is 15561612163. The reversal of 15561612152 is 25121616551.

It is a super-2 number, since 2×15561612152² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60458 + ... + 186489.

Almost surely, 2^15561612152 is an apocalyptic number.

It is an amenable number.

15561612152 is a deficient number, since it is larger than the sum of its proper divisors (13620233008).

15561612152 is a wasteful number, since it uses less digits than its factorization.

15561612152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254830 (or 254826 counting only the distinct ones).

The product of its digits is 18000, while the sum is 35.

The spelling of 15561612152 in words is "fifteen billion, five hundred sixty-one million, six hundred twelve thousand, one hundred fifty-two".