57278455145736 has 128 divisors (see below), whose sum is σ = 165438805017600. Its totient is φ = 16354652878080.

The previous prime is 57278455145641. The next prime is 57278455145741. The reversal of 57278455145736 is 63754155487275.

It is a Harshad number since it is a multiple of its sum of digits (69).

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, 69990271 + ... + 70803918.

It is an arithmetic number, because the mean of its divisors is an integer number (1292490664200).

Almost surely, 2^{57278455145736} is an apocalyptic number.

It is an amenable number.

57278455145736 is an abundant number, since it is smaller than the sum of its proper divisors (108160349871864).

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

57278455145736 is a wasteful number, since it uses less digits than its factorization.

57278455145736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140794299 (or 140794295 counting only the distinct ones).

The product of its digits is 987840000, while the sum is 69.

The spelling of 57278455145736 in words is "fifty-seven trillion, two hundred seventy-eight billion, four hundred fifty-five million, one hundred forty-five thousand, seven hundred thirty-six".