120515747556 has 24 divisors (see below), whose sum is σ = 281649075904. Its totient is φ = 40108249440.

The previous prime is 120515747509. The next prime is 120515747713. The reversal of 120515747556 is 655747515021.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7950415 + ... + 7965558.

Almost surely, 2^120515747556 is an apocalyptic number.

It is an amenable number.

120515747556 is an abundant number, since it is smaller than the sum of its proper divisors (161133328348).

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

120515747556 is a wasteful number, since it uses less digits than its factorization.

120515747556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15916611 (or 15916609 counting only the distinct ones).

The product of its (nonzero) digits is 1470000, while the sum is 48.

The spelling of 120515747556 in words is "one hundred twenty billion, five hundred fifteen million, seven hundred forty-seven thousand, five hundred fifty-six".