155231466564 has 24 divisors (see below), whose sum is σ = 367308260928. Its totient is φ = 51015035680.

The previous prime is 155231466503. The next prime is 155231466617. The reversal of 155231466564 is 465664132551.

It is a happy number.

It is a super-2 number, since 2×155231466564² (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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91097427 + ... + 91099130.

It is an arithmetic number, because the mean of its divisors is an integer number (15304510872).

Almost surely, 2^155231466564 is an apocalyptic number.

It is an amenable number.

155231466564 is an abundant number, since it is smaller than the sum of its proper divisors (212076794364).

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

155231466564 is a wasteful number, since it uses less digits than its factorization.

155231466564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182196635 (or 182196633 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 48.

The spelling of 155231466564 in words is "one hundred fifty-five billion, two hundred thirty-one million, four hundred sixty-six thousand, five hundred sixty-four".