791161685808 has 40 divisors (see below), whose sum is σ = 2201052384048. Its totient is φ = 243434364672.

The previous prime is 791161685773. The next prime is 791161685837. The reversal of 791161685808 is 808586161197.

It is a super-2 number, since 2×791161685808² (a number of 25 digits) contains 22 as substring.

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, 633943035 + ... + 633944282.

Almost surely, 2^791161685808 is an apocalyptic number.

791161685808 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

791161685808 is an abundant number, since it is smaller than the sum of its proper divisors (1409890698240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

791161685808 is a wasteful number, since it uses less digits than its factorization.

791161685808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267887341 (or 1267887335 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 60.

The spelling of 791161685808 in words is "seven hundred ninety-one billion, one hundred sixty-one million, six hundred eighty-five thousand, eight hundred eight".