64147257024 has 112 divisors (see below), whose sum is σ = 171402743808. Its totient is φ = 21171483648.

The previous prime is 64147257019. The next prime is 64147257029. The reversal of 64147257024 is 42075274146.

It is an interprime number because it is at equal distance from previous prime (64147257019) and next prime (64147257029).

It is a super-2 number, since 2×64147257024² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64147257029) 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, 13579527 + ... + 13584249.

Almost surely, 2^64147257024 is an apocalyptic number.

64147257024 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64147257024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85701371904).

64147257024 is an abundant number, since it is smaller than the sum of its proper divisors (107255486784).

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

64147257024 is a wasteful number, since it uses less digits than its factorization.

64147257024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5422 (or 5412 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 42.

The spelling of 64147257024 in words is "sixty-four billion, one hundred forty-seven million, two hundred fifty-seven thousand, twenty-four".