57557730723612 has 144 divisors (see below), whose sum is σ = 156580029839520. Its totient is φ = 16408042172928.

The previous prime is 57557730723607. The next prime is 57557730723629. The reversal of 57557730723612 is 21632703775575.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1117231278 + ... + 1117282794.

It is an arithmetic number, because the mean of its divisors is an integer number (1087361318330).

Almost surely, 2^{57557730723612} 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 57557730723612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78290014919760).

57557730723612 is an abundant number, since it is smaller than the sum of its proper divisors (99022299115908).

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

57557730723612 is a wasteful number, since it uses less digits than its factorization.

57557730723612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55780 (or 55771 counting only the distinct ones).

The product of its (nonzero) digits is 64827000, while the sum is 60.

The spelling of 57557730723612 in words is "fifty-seven trillion, five hundred fifty-seven billion, seven hundred thirty million, seven hundred twenty-three thousand, six hundred twelve".