57636198774 has 384 divisors, whose sum is σ = 169872768000. Its totient is φ = 13672074240.

The previous prime is 57636198757. The next prime is 57636198803. The reversal of 57636198774 is 47789163675.

57636198774 is a `hidden beast` number, since 5 + 7 + 6 + 3 + 619 + 8 + 7 + 7 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 145179144 + ... + 145179540.

It is an arithmetic number, because the mean of its divisors is an integer number (442377000).

Almost surely, 2^57636198774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57636198774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84936384000).

57636198774 is an abundant number, since it is smaller than the sum of its proper divisors (112236569226).

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

57636198774 is a wasteful number, since it uses less digits than its factorization.

57636198774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 625 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 63.

The spelling of 57636198774 in words is "fifty-seven billion, six hundred thirty-six million, one hundred ninety-eight thousand, seven hundred seventy-four".