691797292945 has 8 divisors (see below), whose sum is σ = 905625547200. Its totient is φ = 503125303920.

The previous prime is 691797292939. The next prime is 691797292997. The reversal of 691797292945 is 549292797196.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 691797292945 - 2⁵ = 691797292913 is a prime.

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, 6289066245 + ... + 6289066354.

It is an arithmetic number, because the mean of its divisors is an integer number (113203193400).

Almost surely, 2^691797292945 is an apocalyptic number.

It is an amenable number.

691797292945 is a deficient number, since it is larger than the sum of its proper divisors (213828254255).

691797292945 is a wasteful number, since it uses less digits than its factorization.

691797292945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12578132615.

The product of its digits is 154314720, while the sum is 70.

The spelling of 691797292945 in words is "six hundred ninety-one billion, seven hundred ninety-seven million, two hundred ninety-two thousand, nine hundred forty-five".