155696274224640 has 960 divisors, whose sum is σ = 560780739110592. Its totient is φ = 39893807923200.

The previous prime is 155696274224627. The next prime is 155696274224707. The reversal of 155696274224640 is 46422472696551.

155696274224640 is a `hidden beast` number, since 1 + 5 + 56 + 96 + 274 + 224 + 6 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19333942854 + ... + 19333950906.

Almost surely, 2^{155696274224640} is an apocalyptic number.

155696274224640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155696274224640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280390369555296).

155696274224640 is an abundant number, since it is smaller than the sum of its proper divisors (405084464885952).

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

155696274224640 is a wasteful number, since it uses less digits than its factorization.

155696274224640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8431 (or 8412 counting only the distinct ones).

The product of its (nonzero) digits is 174182400, while the sum is 63.

The spelling of 155696274224640 in words is "one hundred fifty-five trillion, six hundred ninety-six billion, two hundred seventy-four million, two hundred twenty-four thousand, six hundred forty".