155116656504 has 128 divisors (see below), whose sum is σ = 439522848000. Its totient is φ = 50670652032.

The previous prime is 155116656449. The next prime is 155116656517. The reversal of 155116656504 is 405656611551.

155116656504 is a `hidden beast` number, since 15 + 5 + 11 + 66 + 565 + 0 + 4 = 666.

155116656504 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 2×155116656504² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155116656504.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 10375867 + ... + 10390805.

It is an arithmetic number, because the mean of its divisors is an integer number (3433772250).

Almost surely, 2^155116656504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155116656504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219761424000).

155116656504 is an abundant number, since it is smaller than the sum of its proper divisors (284406191496).

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

155116656504 is a wasteful number, since it uses less digits than its factorization.

155116656504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15914 (or 15904 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 45.

The spelling of 155116656504 in words is "one hundred fifty-five billion, one hundred sixteen million, six hundred fifty-six thousand, five hundred four".