664353032271552 has 168 divisors, whose sum is σ = 2052554773169264. Its totient is φ = 204234288039936.

The previous prime is 664353032271521. The next prime is 664353032271647. The reversal of 664353032271552 is 255172230353466.

664353032271552 is a `hidden beast` number, since 6 + 6 + 4 + 3 + 5 + 30 + 32 + 27 + 1 + 552 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31093363 + ... + 47911410.

Almost surely, 2^{664353032271552} is an apocalyptic number.

It is an amenable number.

664353032271552 is an abundant number, since it is smaller than the sum of its proper divisors (1388201740897712).

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

664353032271552 is a wasteful number, since it uses less digits than its factorization.

664353032271552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79005927 (or 79005914 counting only the distinct ones).

The product of its (nonzero) digits is 27216000, while the sum is 54.

The spelling of 664353032271552 in words is "six hundred sixty-four trillion, three hundred fifty-three billion, thirty-two million, two hundred seventy-one thousand, five hundred fifty-two".