120256557328 has 20 divisors (see below), whose sum is σ = 233268981660. Its totient is φ = 60058110464.

The previous prime is 120256557307. The next prime is 120256557341. The reversal of 120256557328 is 823755652021.

It can be written as a sum of positive squares in 2 ways, for example, as 49645187344 + 70611369984 = 222812^2 + 265728^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4371373 + ... + 4398796.

It is an arithmetic number, because the mean of its divisors is an integer number (11663449083).

Almost surely, 2^120256557328 is an apocalyptic number.

It is an amenable number.

120256557328 is a deficient number, since it is larger than the sum of its proper divisors (113012424332).

120256557328 is an equidigital number, since it uses as much as digits as its factorization.

120256557328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8771034 (or 8771028 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 46.

The spelling of 120256557328 in words is "one hundred twenty billion, two hundred fifty-six million, five hundred fifty-seven thousand, three hundred twenty-eight".