57638646387 has 60 divisors (see below), whose sum is σ = 104531658000. Its totient is φ = 30998847744.

The previous prime is 57638646347. The next prime is 57638646433. The reversal of 57638646387 is 78364683675.

It is not a de Polignac number, because 57638646387 - 2¹¹ = 57638644339 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (57638646347) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 12012 + ... + 339737.

It is an arithmetic number, because the mean of its divisors is an integer number (1742194300).

Almost surely, 2^57638646387 is an apocalyptic number.

57638646387 is a deficient number, since it is larger than the sum of its proper divisors (46893011613).

57638646387 is a wasteful number, since it uses less digits than its factorization.

57638646387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351802 (or 351776 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 63.

The spelling of 57638646387 in words is "fifty-seven billion, six hundred thirty-eight million, six hundred forty-six thousand, three hundred eighty-seven".