57491284368 has 160 divisors (see below), whose sum is σ = 183028285440. Its totient is φ = 15181931520.

The previous prime is 57491284309. The next prime is 57491284421. The reversal of 57491284368 is 86348219475.

It is a happy number.

57491284368 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151921 + ... + 371567.

It is an arithmetic number, because the mean of its divisors is an integer number (1143926784).

Almost surely, 2^57491284368 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 57491284368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91514142720).

57491284368 is an abundant number, since it is smaller than the sum of its proper divisors (125537001072).

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

57491284368 is a wasteful number, since it uses less digits than its factorization.

57491284368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219725 (or 219719 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 57.

The spelling of 57491284368 in words is "fifty-seven billion, four hundred ninety-one million, two hundred eighty-four thousand, three hundred sixty-eight".