57520023721440 has 192 divisors, whose sum is σ = 212122624573440. Its totient is φ = 12826764840960.

The previous prime is 57520023721429. The next prime is 57520023721477. The reversal of 57520023721440 is 4412732002575.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 57520023721392 and 57520023721401.

It is a congruent number.

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, 208631200 + ... + 208906719.

It is an arithmetic number, because the mean of its divisors is an integer number (1104805336320).

Almost surely, 2^{57520023721440} is an apocalyptic number.

It is an amenable number.

57520023721440 is an abundant number, since it is smaller than the sum of its proper divisors (154602600852000).

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

57520023721440 is a wasteful number, since it uses less digits than its factorization.

57520023721440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417537985 (or 417537977 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 42.

The spelling of 57520023721440 in words is "fifty-seven trillion, five hundred twenty billion, twenty-three million, seven hundred twenty-one thousand, four hundred forty".