9661120663392 has 72 divisors (see below), whose sum is σ = 29971431158760. Its totient is φ = 2927612321280.

The previous prime is 9661120663361. The next prime is 9661120663393. The reversal of 9661120663392 is 2933660211669.

9661120663392 is a `hidden beast` number, since 96 + 6 + 11 + 206 + 6 + 339 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9661120663393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1524794917 + ... + 1524801252.

It is an arithmetic number, because the mean of its divisors is an integer number (416269877205).

Almost surely, 2^{9661120663392} is an apocalyptic number.

It is an amenable number.

9661120663392 is an abundant number, since it is smaller than the sum of its proper divisors (20310310495368).

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

9661120663392 is a wasteful number, since it uses less digits than its factorization.

9661120663392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049596196 (or 3049596185 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 54.

The spelling of 9661120663392 in words is "nine trillion, six hundred sixty-one billion, one hundred twenty million, six hundred sixty-three thousand, three hundred ninety-two".