68936254464 has 1056 divisors, whose sum is σ = 258075279360. Its totient is φ = 16102195200.

The previous prime is 68936254441. The next prime is 68936254529. The reversal of 68936254464 is 46445263986.

It is a tau number, because it is divible by the number of its divisors (1056).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 872610777 + ... + 872610855.

Almost surely, 2^68936254464 is an apocalyptic number.

68936254464 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 68936254464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129037639680).

68936254464 is an abundant number, since it is smaller than the sum of its proper divisors (189139024896).

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

68936254464 is a wasteful number, since it uses less digits than its factorization.

68936254464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 150 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 57.

The spelling of 68936254464 in words is "sixty-eight billion, nine hundred thirty-six million, two hundred fifty-four thousand, four hundred sixty-four".