664783987540096 has 32 divisors (see below), whose sum is σ = 1346821373077200. Its totient is φ = 326758231160064.

The previous prime is 664783987540063. The next prime is 664783987540103. The reversal of 664783987540096 is 690045789387466.

It is a tau number, because it is divible by the number of its divisors (32).

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 3 ways as a sum of consecutive naturals, for example, 44013762810 + ... + 44013777913.

Almost surely, 2^{664783987540096} is an apocalyptic number.

It is an amenable number.

664783987540096 is an abundant number, since it is smaller than the sum of its proper divisors (682037385537104).

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

664783987540096 is an equidigital number, since it uses as much as digits as its factorization.

664783987540096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88027540796 (or 88027540784 counting only the distinct ones).

The product of its (nonzero) digits is 13168189440, while the sum is 82.

The spelling of 664783987540096 in words is "six hundred sixty-four trillion, seven hundred eighty-three billion, nine hundred eighty-seven million, five hundred forty thousand, ninety-six".