120555521523 has 6 divisors (see below), whose sum is σ = 174135753324. Its totient is φ = 80370347676.

The previous prime is 120555521507. The next prime is 120555521549. The reversal of 120555521523 is 325125555021.

120555521523 is a `hidden beast` number, since 1 + 2 + 0 + 55 + 552 + 1 + 52 + 3 = 666.

It is not a de Polignac number, because 120555521523 - 2⁴ = 120555521507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120555521503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6697528965 + ... + 6697528982.

It is an arithmetic number, because the mean of its divisors is an integer number (29022625554).

Almost surely, 2^120555521523 is an apocalyptic number.

120555521523 is a deficient number, since it is larger than the sum of its proper divisors (53580231801).

120555521523 is a wasteful number, since it uses less digits than its factorization.

120555521523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13395057953 (or 13395057950 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 120555521523 in words is "one hundred twenty billion, five hundred fifty-five million, five hundred twenty-one thousand, five hundred twenty-three".