64520628801072 has 20 divisors (see below), whose sum is σ = 166678291069560. Its totient is φ = 21506876267008.

The previous prime is 64520628801043. The next prime is 64520628801193. The reversal of 64520628801072 is 27010882602546.

It is a super-4 number, since 4×64520628801072⁴ (a number of 56 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672089883297 + ... + 672089883392.

It is an arithmetic number, because the mean of its divisors is an integer number (8333914553478).

Almost surely, 2^{64520628801072} is an apocalyptic number.

It is an amenable number.

64520628801072 is an abundant number, since it is smaller than the sum of its proper divisors (102157662268488).

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

64520628801072 is a wasteful number, since it uses less digits than its factorization.

64520628801072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344179766700 (or 1344179766694 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 64520628801072 in words is "sixty-four trillion, five hundred twenty billion, six hundred twenty-eight million, eight hundred one thousand, seventy-two".