120521218585788 has 18 divisors (see below), whose sum is σ = 304650858091944. Its totient is φ = 40173739528584.

The previous prime is 120521218585787. The next prime is 120521218585853. The reversal of 120521218585788 is 887585812125021.

120521218585788 is a `hidden beast` number, since 1 + 2 + 0 + 5 + 2 + 1 + 2 + 1 + 8 + 58 + 578 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120521218585787) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1673905813656 + ... + 1673905813727.

Almost surely, 2^{120521218585788} is an apocalyptic number.

120521218585788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

120521218585788 is an abundant number, since it is smaller than the sum of its proper divisors (184129639506156).

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

120521218585788 is a wasteful number, since it uses less digits than its factorization.

120521218585788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3347811627393 (or 3347811627388 counting only the distinct ones).

The product of its (nonzero) digits is 28672000, while the sum is 63.

The spelling of 120521218585788 in words is "one hundred twenty trillion, five hundred twenty-one billion, two hundred eighteen million, five hundred eighty-five thousand, seven hundred eighty-eight".