665053745832 has 160 divisors (see below), whose sum is σ = 2240922129600. Its totient is φ = 180014524416.

The previous prime is 665053745791. The next prime is 665053745849. The reversal of 665053745832 is 238547350566.

665053745832 is a `hidden beast` number, since 6 + 6 + 5 + 0 + 53 + 7 + 4 + 583 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3772153 + ... + 3944520.

It is an arithmetic number, because the mean of its divisors is an integer number (14005763310).

Almost surely, 2^665053745832 is an apocalyptic number.

It is an amenable number.

665053745832 is an abundant number, since it is smaller than the sum of its proper divisors (1575868383768).

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

665053745832 is a wasteful number, since it uses less digits than its factorization.

665053745832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7716717 (or 7716704 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 54.

The spelling of 665053745832 in words is "six hundred sixty-five billion, fifty-three million, seven hundred forty-five thousand, eight hundred thirty-two".