64862253024 has 48 divisors (see below), whose sum is σ = 172314801792. Its totient is φ = 21360257408.

The previous prime is 64862253019. The next prime is 64862253059. The reversal of 64862253024 is 42035226846.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×64862253024² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4062204 + ... + 4078139.

It is an arithmetic number, because the mean of its divisors is an integer number (3589891704).

Almost surely, 2^64862253024 is an apocalyptic number.

It is an amenable number.

64862253024 is an abundant number, since it is smaller than the sum of its proper divisors (107452548768).

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

64862253024 is a wasteful number, since it uses less digits than its factorization.

64862253024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8140439 (or 8140431 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 64862253024 in words is "sixty-four billion, eight hundred sixty-two million, two hundred fifty-three thousand, twenty-four".