155244323264 has 112 divisors (see below), whose sum is σ = 330139852800. Its totient is φ = 72217267200.

The previous prime is 155244323249. The next prime is 155244323281. The reversal of 155244323264 is 462323442551.

It is a super-2 number, since 2×155244323264² (a number of 23 digits) contains 22 as substring.

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, 18343994 + ... + 18352454.

Almost surely, 2^155244323264 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 155244323264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165069926400).

155244323264 is an abundant number, since it is smaller than the sum of its proper divisors (174895529536).

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

155244323264 is a wasteful number, since it uses less digits than its factorization.

155244323264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8762 (or 8752 counting only the distinct ones).

The product of its digits is 691200, while the sum is 41.

The spelling of 155244323264 in words is "one hundred fifty-five billion, two hundred forty-four million, three hundred twenty-three thousand, two hundred sixty-four".