665088138024 has 32 divisors (see below), whose sum is σ = 1669856497920. Its totient is φ = 220744558976.

The previous prime is 665088138019. The next prime is 665088138061. The reversal of 665088138024 is 420831880566.

It is a happy number.

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, 59462232 + ... + 59473415.

It is an arithmetic number, because the mean of its divisors is an integer number (52183015560).

Almost surely, 2^665088138024 is an apocalyptic number.

It is an amenable number.

665088138024 is an abundant number, since it is smaller than the sum of its proper divisors (1004768359896).

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

665088138024 is a wasteful number, since it uses less digits than its factorization.

665088138024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118935889 (or 118935885 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 665088138024 in words is "six hundred sixty-five billion, eighty-eight million, one hundred thirty-eight thousand, twenty-four".