57691044980 has 24 divisors (see below), whose sum is σ = 121236034920. Its totient is φ = 23060257920.

The previous prime is 57691044979. The next prime is 57691044989. The reversal of 57691044980 is 8944019675.

It can be written as a sum of positive squares in 4 ways, for example, as 69923044 + 57621121936 = 8362^2 + 240044^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57691044989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 980711 + ... + 1037870.

It is an arithmetic number, because the mean of its divisors is an integer number (5051501455).

Almost surely, 2^57691044980 is an apocalyptic number.

It is an amenable number.

57691044980 is an abundant number, since it is smaller than the sum of its proper divisors (63544989940).

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

57691044980 is a wasteful number, since it uses less digits than its factorization.

57691044980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020019 (or 2020017 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 57691044980 in words is "fifty-seven billion, six hundred ninety-one million, forty-four thousand, nine hundred eighty".