665355574632 has 64 divisors (see below), whose sum is σ = 1905250032000. Its totient is φ = 189678182400.

The previous prime is 665355574603. The next prime is 665355574679. The reversal of 665355574632 is 236475553566.

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 15 ways as a sum of consecutive naturals, for example, 4334869 + ... + 4485732.

It is an arithmetic number, because the mean of its divisors is an integer number (29769531750).

Almost surely, 2^665355574632 is an apocalyptic number.

It is an amenable number.

665355574632 is an abundant number, since it is smaller than the sum of its proper divisors (1239894457368).

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

665355574632 is a wasteful number, since it uses less digits than its factorization.

665355574632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8821066 (or 8821062 counting only the distinct ones).

The product of its digits is 68040000, while the sum is 57.

The spelling of 665355574632 in words is "six hundred sixty-five billion, three hundred fifty-five million, five hundred seventy-four thousand, six hundred thirty-two".