64232988864 has 224 divisors, whose sum is σ = 190163013120. Its totient is φ = 18970828800.

The previous prime is 64232988863. The next prime is 64232988949. The reversal of 64232988864 is 46888923246.

It is a junction number, because it is equal to n+sod(n) for n = 64232988798 and 64232988807.

It is not an unprimeable number, because it can be changed into a prime (64232988863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13343322 + ... + 13348134.

Almost surely, 2^64232988864 is an apocalyptic number.

64232988864 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 64232988864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95081506560).

64232988864 is an abundant number, since it is smaller than the sum of its proper divisors (125930024256).

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

64232988864 is a wasteful number, since it uses less digits than its factorization.

64232988864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4999 (or 4989 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 60.

The spelling of 64232988864 in words is "sixty-four billion, two hundred thirty-two million, nine hundred eighty-eight thousand, eight hundred sixty-four".