57091898108 has 24 divisors (see below), whose sum is σ = 115747961952. Its totient is φ = 24132777984.

The previous prime is 57091898107. The next prime is 57091898113. The reversal of 57091898108 is 80189819075.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57091898107) 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, 13963685 + ... + 13967772.

It is an arithmetic number, because the mean of its divisors is an integer number (4822831748).

Almost surely, 2^57091898108 is an apocalyptic number.

It is an amenable number.

57091898108 is an abundant number, since it is smaller than the sum of its proper divisors (58656063844).

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

57091898108 is a wasteful number, since it uses less digits than its factorization.

57091898108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27931541 (or 27931539 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 56.

The spelling of 57091898108 in words is "fifty-seven billion, ninety-one million, eight hundred ninety-eight thousand, one hundred eight".