691301399392 has 24 divisors (see below), whose sum is σ = 1370933942616. Its totient is φ = 343127699712.

The previous prime is 691301399351. The next prime is 691301399407. The reversal of 691301399392 is 293993103196.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78839298 + ... + 78848065.

It is an arithmetic number, because the mean of its divisors is an integer number (57122247609).

Almost surely, 2^691301399392 is an apocalyptic number.

It is an amenable number.

691301399392 is a deficient number, since it is larger than the sum of its proper divisors (679632543224).

691301399392 is a wasteful number, since it uses less digits than its factorization.

691301399392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157687510 (or 157687502 counting only the distinct ones).

The product of its (nonzero) digits is 2125764, while the sum is 55.

The spelling of 691301399392 in words is "six hundred ninety-one billion, three hundred one million, three hundred ninety-nine thousand, three hundred ninety-two".