7813732312257 has 16 divisors (see below), whose sum is σ = 10515744305088. Its totient is φ = 5160661585920.

The previous prime is 7813732312249. The next prime is 7813732312259. The reversal of 7813732312257 is 7522132373187.

It is not a de Polignac number, because 7813732312257 - 2³ = 7813732312249 is a prime.

It is a super-2 number, since 2×7813732312257² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7813732312259) 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, 27858843 + ... + 28137920.

It is an arithmetic number, because the mean of its divisors is an integer number (657234019068).

Almost surely, 2^{7813732312257} is an apocalyptic number.

It is an amenable number.

7813732312257 is a deficient number, since it is larger than the sum of its proper divisors (2702011992831).

7813732312257 is a wasteful number, since it uses less digits than its factorization.

7813732312257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55997200.

The product of its digits is 2963520, while the sum is 51.

The spelling of 7813732312257 in words is "seven trillion, eight hundred thirteen billion, seven hundred thirty-two million, three hundred twelve thousand, two hundred fifty-seven".