120717565920 has 480 divisors, whose sum is σ = 487739786688. Its totient is φ = 27544707072.

The previous prime is 120717565907. The next prime is 120717565939. The reversal of 120717565920 is 29565717021.

120717565920 is a `hidden beast` number, since 1 + 2 + 0 + 7 + 1 + 7 + 56 + 592 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 99519234 + ... + 99520446.

Almost surely, 2^120717565920 is an apocalyptic number.

120717565920 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 120717565920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243869893344).

120717565920 is an abundant number, since it is smaller than the sum of its proper divisors (367022220768).

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

120717565920 is a wasteful number, since it uses less digits than its factorization.

120717565920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344 (or 2327 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 45.

The spelling of 120717565920 in words is "one hundred twenty billion, seven hundred seventeen million, five hundred sixty-five thousand, nine hundred twenty".