691907159324 has 6 divisors (see below), whose sum is σ = 1210837528824. Its totient is φ = 345953579660.

The previous prime is 691907159299. The next prime is 691907159347. The reversal of 691907159324 is 423951709196.

It is a self number, because there is not a number n which added to its sum of digits gives 691907159324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86488394912 + ... + 86488394919.

It is an arithmetic number, because the mean of its divisors is an integer number (201806254804).

Almost surely, 2^691907159324 is an apocalyptic number.

It is an amenable number.

691907159324 is a deficient number, since it is larger than the sum of its proper divisors (518930369500).

691907159324 is a wasteful number, since it uses less digits than its factorization.

691907159324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172976789835 (or 172976789833 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 56.

The spelling of 691907159324 in words is "six hundred ninety-one billion, nine hundred seven million, one hundred fifty-nine thousand, three hundred twenty-four".