155126507656 has 8 divisors (see below), whose sum is σ = 290862201870. Its totient is φ = 77563253824.

The previous prime is 155126507629. The next prime is 155126507681. The reversal of 155126507656 is 656705621551.

It is a happy number.

155126507656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 145339362756 + 9787144900 = 381234^2 + 98930^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×155126507656² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9695406721 + ... + 9695406736.

Almost surely, 2^155126507656 is an apocalyptic number.

It is an amenable number.

155126507656 is a deficient number, since it is larger than the sum of its proper divisors (135735694214).

155126507656 is a wasteful number, since it uses less digits than its factorization.

155126507656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19390813463 (or 19390813459 counting only the distinct ones).

The product of its (nonzero) digits is 1890000, while the sum is 49.

The spelling of 155126507656 in words is "one hundred fifty-five billion, one hundred twenty-six million, five hundred seven thousand, six hundred fifty-six".