64646529552 has 120 divisors (see below), whose sum is σ = 201957975648. Its totient is φ = 19134259200.

The previous prime is 64646529539. The next prime is 64646529557. The reversal of 64646529552 is 25592564646.

64646529552 is a `hidden beast` number, since 6 + 4 + 6 + 4 + 65 + 29 + 552 = 666.

It is a super-3 number, since 3×64646529552³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (64646529557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 406449 + ... + 542672.

Almost surely, 2^64646529552 is an apocalyptic number.

It is an amenable number.

64646529552 is an abundant number, since it is smaller than the sum of its proper divisors (137311446096).

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

64646529552 is a wasteful number, since it uses less digits than its factorization.

64646529552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949189 (or 949180 counting only the distinct ones).

The product of its digits is 15552000, while the sum is 54.

The spelling of 64646529552 in words is "sixty-four billion, six hundred forty-six million, five hundred twenty-nine thousand, five hundred fifty-two".