64770647652 has 48 divisors (see below), whose sum is σ = 167956472320. Its totient is φ = 21586028256.

The previous prime is 64770647629. The next prime is 64770647657. The reversal of 64770647652 is 25674607746.

It is a super-2 number, since 2×64770647652² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (64770647657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528498 + ... + 639414.

Almost surely, 2^64770647652 is an apocalyptic number.

It is an amenable number.

64770647652 is an abundant number, since it is smaller than the sum of its proper divisors (103185824668).

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

64770647652 is a wasteful number, since it uses less digits than its factorization.

64770647652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116337 (or 116329 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 54.

The spelling of 64770647652 in words is "sixty-four billion, seven hundred seventy million, six hundred forty-seven thousand, six hundred fifty-two".