664710364192 has 48 divisors (see below), whose sum is σ = 1505503020672. Its totient is φ = 282989260800.

The previous prime is 664710364147. The next prime is 664710364193. The reversal of 664710364192 is 291463017466.

It is a super-2 number, since 2×664710364192² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (664710364193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9792193 + ... + 9859840.

It is an arithmetic number, because the mean of its divisors is an integer number (31364646264).

Almost surely, 2^664710364192 is an apocalyptic number.

It is an amenable number.

664710364192 is an abundant number, since it is smaller than the sum of its proper divisors (840792656480).

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

664710364192 is a wasteful number, since it uses less digits than its factorization.

664710364192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19652201 (or 19652193 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 664710364192 in words is "six hundred sixty-four billion, seven hundred ten million, three hundred sixty-four thousand, one hundred ninety-two".