791387181056 has 26 divisors (see below), whose sum is σ = 1582581160542. Its totient is φ = 395693588480.

The previous prime is 791387181041. The next prime is 791387181113. The reversal of 791387181056 is 650181783197.

It can be written as a sum of positive squares in only one way, i.e., 786385862656 + 5001318400 = 886784^2 + 70720^2 .

It is a junction number, because it is equal to n+sod(n) for n = 791387180992 and 791387181010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96600785 + ... + 96608976.

Almost surely, 2^791387181056 is an apocalyptic number.

It is an amenable number.

791387181056 is a deficient number, since it is larger than the sum of its proper divisors (791193979486).

791387181056 is an equidigital number, since it uses as much as digits as its factorization.

791387181056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193209785 (or 193209763 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 56.

The spelling of 791387181056 in words is "seven hundred ninety-one billion, three hundred eighty-seven million, one hundred eighty-one thousand, fifty-six".