685016457938 has 16 divisors (see below), whose sum is σ = 1049774961024. Its totient is φ = 335096860560.

The previous prime is 685016457919. The next prime is 685016457941. The reversal of 685016457938 is 839754610586.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1091573 + ... + 1600488.

It is an arithmetic number, because the mean of its divisors is an integer number (65610935064).

Almost surely, 2^685016457938 is an apocalyptic number.

685016457938 is a deficient number, since it is larger than the sum of its proper divisors (364758503086).

685016457938 is a wasteful number, since it uses less digits than its factorization.

685016457938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694817.

The product of its (nonzero) digits is 43545600, while the sum is 62.

The spelling of 685016457938 in words is "six hundred eighty-five billion, sixteen million, four hundred fifty-seven thousand, nine hundred thirty-eight".