151556561556 has 48 divisors (see below), whose sum is σ = 359502907008. Its totient is φ = 49680489600.

The previous prime is 151556561543. The next prime is 151556561561. The reversal of 151556561556 is 655165655151.

It is a super-2 number, since 2×151556561556² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 151556561499 and 151556561508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4097626 + ... + 4134446.

It is an arithmetic number, because the mean of its divisors is an integer number (7489643896).

Almost surely, 2^151556561556 is an apocalyptic number.

It is an amenable number.

151556561556 is an abundant number, since it is smaller than the sum of its proper divisors (207946345452).

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

151556561556 is a wasteful number, since it uses less digits than its factorization.

151556561556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42512 (or 42510 counting only the distinct ones).

The product of its digits is 3375000, while the sum is 51.

The spelling of 151556561556 in words is "one hundred fifty-one billion, five hundred fifty-six million, five hundred sixty-one thousand, five hundred fifty-six".