64231534656 has 224 divisors, whose sum is σ = 201148980480. Its totient is φ = 20028874752.

The previous prime is 64231534567. The next prime is 64231534657. The reversal of 64231534656 is 65643513246.

64231534656 is a `hidden beast` number, since 64 + 2 + 3 + 1 + 534 + 6 + 56 = 666.

It is not an unprimeable number, because it can be changed into a prime (64231534657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4899246 + ... + 4912338.

It is an arithmetic number, because the mean of its divisors is an integer number (897986520).

Almost surely, 2^64231534656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64231534656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100574490240).

64231534656 is an abundant number, since it is smaller than the sum of its proper divisors (136917445824).

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

64231534656 is a wasteful number, since it uses less digits than its factorization.

64231534656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13298 (or 13282 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The spelling of 64231534656 in words is "sixty-four billion, two hundred thirty-one million, five hundred thirty-four thousand, six hundred fifty-six".