791231680804 has 24 divisors (see below), whose sum is σ = 1403695232408. Its totient is φ = 390176455680.

The previous prime is 791231680801. The next prime is 791231680807. The reversal of 791231680804 is 408086132197.

It is an interprime number because it is at equal distance from previous prime (791231680801) and next prime (791231680807).

It can be written as a sum of positive squares in 4 ways, for example, as 497803624704 + 293428056100 = 705552^2 + 541690^2 .

It is not an unprimeable number, because it can be changed into a prime (791231680801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6803464 + ... + 6918784.

Almost surely, 2^791231680804 is an apocalyptic number.

It is an amenable number.

791231680804 is a deficient number, since it is larger than the sum of its proper divisors (612463551604).

791231680804 is a wasteful number, since it uses less digits than its factorization.

791231680804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138895 (or 138893 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 791231680804 in words is "seven hundred ninety-one billion, two hundred thirty-one million, six hundred eighty thousand, eight hundred four".