64380022696 has 64 divisors (see below), whose sum is σ = 135149031360. Its totient is φ = 28496832000.

The previous prime is 64380022643. The next prime is 64380022717. The reversal of 64380022696 is 69622008346.

64380022696 is a nontrivial binomial coefficient, being equal to C(358832, 2).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1957266 + ... + 1989886.

It is an arithmetic number, because the mean of its divisors is an integer number (2111703615).

Almost surely, 2^64380022696 is an apocalyptic number.

64380022696 is the 358831-st triangular number and also the 179416-th hexagonal number.

64380022696 is the 119611-st centered nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64380022696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67574515680).

64380022696 is an abundant number, since it is smaller than the sum of its proper divisors (70769008664).

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

64380022696 is a wasteful number, since it uses less digits than its factorization.

64380022696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33226 (or 33222 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 64380022696 in words is "sixty-four billion, three hundred eighty million, twenty-two thousand, six hundred ninety-six".