665131536632 has 16 divisors (see below), whose sum is σ = 1247138420760. Its totient is φ = 332561291104.

The previous prime is 665131536613. The next prime is 665131536679. The reversal of 665131536632 is 236635131566.

It is a super-2 number, since 2×665131536632² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120323 + ... + 1159629.

Almost surely, 2^665131536632 is an apocalyptic number.

It is an amenable number.

665131536632 is a deficient number, since it is larger than the sum of its proper divisors (582006884128).

665131536632 is a wasteful number, since it uses less digits than its factorization.

665131536632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119310 (or 1119306 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 47.

The spelling of 665131536632 in words is "six hundred sixty-five billion, one hundred thirty-one million, five hundred thirty-six thousand, six hundred thirty-two".