664612404852 has 48 divisors (see below), whose sum is σ = 1694067927552. Its totient is φ = 201120643680.

The previous prime is 664612404817. The next prime is 664612404893. The reversal of 664612404852 is 258404216466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3366858 + ... + 3558785.

It is an arithmetic number, because the mean of its divisors is an integer number (35293081824).

Almost surely, 2^664612404852 is an apocalyptic number.

It is an amenable number.

664612404852 is an abundant number, since it is smaller than the sum of its proper divisors (1029455522700).

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

664612404852 is a wasteful number, since it uses less digits than its factorization.

664612404852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6926388 (or 6926386 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 48.

The spelling of 664612404852 in words is "six hundred sixty-four billion, six hundred twelve million, four hundred four thousand, eight hundred fifty-two".