57878515264640 has 256 divisors, whose sum is σ = 160384200076800. Its totient is φ = 19561566044160.

The previous prime is 57878515264579. The next prime is 57878515264667. The reversal of 57878515264640 is 4646251587875.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3294345776 + ... + 3294363344.

It is an arithmetic number, because the mean of its divisors is an integer number (626500781550).

Almost surely, 2^{57878515264640} 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 57878515264640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80192100038400).

57878515264640 is an abundant number, since it is smaller than the sum of its proper divisors (102505684812160).

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

57878515264640 is a wasteful number, since it uses less digits than its factorization.

57878515264640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28023 (or 28011 counting only the distinct ones).

The product of its (nonzero) digits is 451584000, while the sum is 68.

The spelling of 57878515264640 in words is "fifty-seven trillion, eight hundred seventy-eight billion, five hundred fifteen million, two hundred sixty-four thousand, six hundred forty".