791525986491 has 16 divisors (see below), whose sum is σ = 1056737873664. Its totient is φ = 526999238304.

The previous prime is 791525986487. The next prime is 791525986519. The reversal of 791525986491 is 194689525197.

It is a happy number.

It is not a de Polignac number, because 791525986491 - 2² = 791525986487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (791525986481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19836226 + ... + 19876088.

It is an arithmetic number, because the mean of its divisors is an integer number (66046117104).

Almost surely, 2^791525986491 is an apocalyptic number.

791525986491 is a deficient number, since it is larger than the sum of its proper divisors (265211887173).

791525986491 is a wasteful number, since it uses less digits than its factorization.

791525986491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48290.

The product of its digits is 48988800, while the sum is 66.

The spelling of 791525986491 in words is "seven hundred ninety-one billion, five hundred twenty-five million, nine hundred eighty-six thousand, four hundred ninety-one".