64682392320 has 1152 divisors, whose sum is σ = 286471342080. Its totient is φ = 13456834560.

The previous prime is 64682392279. The next prime is 64682392343. The reversal of 64682392320 is 2329328646.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 411989682 + ... + 411989838.

It is an arithmetic number, because the mean of its divisors is an integer number (248673040).

Almost surely, 2^64682392320 is an apocalyptic number.

64682392320 is a gapful number since it is divisible by the number (60) 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 64682392320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143235671040).

64682392320 is an abundant number, since it is smaller than the sum of its proper divisors (221788949760).

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

64682392320 is a wasteful number, since it uses less digits than its factorization.

64682392320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The spelling of 64682392320 in words is "sixty-four billion, six hundred eighty-two million, three hundred ninety-two thousand, three hundred twenty".