57640440284 has 18 divisors (see below), whose sum is σ = 117339468120. Its totient is φ = 24703045752.

The previous prime is 57640440259. The next prime is 57640440337. The reversal of 57640440284 is 48204404675.

It is a super-2 number, since 2×57640440284² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147041744 + ... + 147042135.

It is an arithmetic number, because the mean of its divisors is an integer number (6518859340).

Almost surely, 2^57640440284 is an apocalyptic number.

It is an amenable number.

57640440284 is an abundant number, since it is smaller than the sum of its proper divisors (59699027836).

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

57640440284 is a wasteful number, since it uses less digits than its factorization.

57640440284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294083897 (or 294083888 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 44.

The spelling of 57640440284 in words is "fifty-seven billion, six hundred forty million, four hundred forty thousand, two hundred eighty-four".