57415021686 has 96 divisors (see below), whose sum is σ = 140593190400. Its totient is φ = 16773973440.

The previous prime is 57415021679. The next prime is 57415021717. The reversal of 57415021686 is 68612051475.

57415021686 is a `hidden beast` number, since 57 + 4 + 1 + 502 + 16 + 86 = 666.

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, 4121545 + ... + 4135451.

It is an arithmetic number, because the mean of its divisors is an integer number (1464512400).

Almost surely, 2^57415021686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57415021686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70296595200).

57415021686 is an abundant number, since it is smaller than the sum of its proper divisors (83178168714).

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

57415021686 is a wasteful number, since it uses less digits than its factorization.

57415021686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14674 (or 14671 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 57415021686 in words is "fifty-seven billion, four hundred fifteen million, twenty-one thousand, six hundred eighty-six".