155163057156 has 36 divisors (see below), whose sum is σ = 399618067212. Its totient is φ = 50745150144.

The previous prime is 155163057151. The next prime is 155163057187. The reversal of 155163057156 is 651750361551.

155163057156 is a `hidden beast` number, since 1 + 5 + 5 + 1 + 630 + 5 + 7 + 1 + 5 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 61214677056 + 93948380100 = 247416^2 + 306510^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×155163057156² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155163057151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40659271 + ... + 40663086.

It is an arithmetic number, because the mean of its divisors is an integer number (11100501867).

Almost surely, 2^155163057156 is an apocalyptic number.

It is an amenable number.

155163057156 is an abundant number, since it is smaller than the sum of its proper divisors (244455010056).

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

155163057156 is a wasteful number, since it uses less digits than its factorization.

155163057156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81322420 (or 81322415 counting only the distinct ones).

The product of its (nonzero) digits is 472500, while the sum is 45.

The spelling of 155163057156 in words is "one hundred fifty-five billion, one hundred sixty-three million, fifty-seven thousand, one hundred fifty-six".