57611701720 has 64 divisors (see below), whose sum is σ = 132131891520. Its totient is φ = 22599642624.

The previous prime is 57611701711. The next prime is 57611701781. The reversal of 57611701720 is 2710711675.

It is a self number, because there is not a number n which added to its sum of digits gives 57611701720.

It is a congruent number.

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, 6115734 + ... + 6125146.

It is an arithmetic number, because the mean of its divisors is an integer number (2064560805).

Almost surely, 2^57611701720 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 57611701720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66065945760).

57611701720 is an abundant number, since it is smaller than the sum of its proper divisors (74520189800).

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

57611701720 is a wasteful number, since it uses less digits than its factorization.

57611701720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12364 (or 12360 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 37.

The spelling of 57611701720 in words is "fifty-seven billion, six hundred eleven million, seven hundred one thousand, seven hundred twenty".