9720642977130 has 32 divisors (see below), whose sum is σ = 24557413838400. Its totient is φ = 2455741383552.

The previous prime is 9720642977119. The next prime is 9720642977167. The reversal of 9720642977130 is 317792460279.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8526879235 + ... + 8526880374.

It is an arithmetic number, because the mean of its divisors is an integer number (767419182450).

Almost surely, 2^{9720642977130} is an apocalyptic number.

9720642977130 is an abundant number, since it is smaller than the sum of its proper divisors (14836770861270).

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

9720642977130 is a wasteful number, since it uses less digits than its factorization.

9720642977130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17053759638.

The product of its (nonzero) digits is 8001504, while the sum is 57.

The spelling of 9720642977130 in words is "nine trillion, seven hundred twenty billion, six hundred forty-two million, nine hundred seventy-seven thousand, one hundred thirty".