665490872932 has 24 divisors (see below), whose sum is σ = 1187064287136. Its totient is φ = 326372278848.

The previous prime is 665490872909. The next prime is 665490872951. The reversal of 665490872932 is 239278094566.

665490872932 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5266258 + ... + 5391145.

It is an arithmetic number, because the mean of its divisors is an integer number (49461011964).

Almost surely, 2^665490872932 is an apocalyptic number.

It is an amenable number.

665490872932 is a deficient number, since it is larger than the sum of its proper divisors (521573414204).

665490872932 is a wasteful number, since it uses less digits than its factorization.

665490872932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10657707 (or 10657705 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 61.

The spelling of 665490872932 in words is "six hundred sixty-five billion, four hundred ninety million, eight hundred seventy-two thousand, nine hundred thirty-two".