13117996772 has 6 divisors (see below), whose sum is σ = 22956494358. Its totient is φ = 6558998384.

The previous prime is 13117996757. The next prime is 13117996813. The reversal of 13117996772 is 27769971131.

It can be written as a sum of positive squares in only one way, i.e., 6790748836 + 6327247936 = 82406^2 + 79544^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1639749593 + ... + 1639749600.

It is an arithmetic number, because the mean of its divisors is an integer number (3826082393).

Almost surely, 2^13117996772 is an apocalyptic number.

It is an amenable number.

13117996772 is a deficient number, since it is larger than the sum of its proper divisors (9838497586).

13117996772 is a wasteful number, since it uses less digits than its factorization.

13117996772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279499197 (or 3279499195 counting only the distinct ones).

The product of its digits is 1000188, while the sum is 53.

The spelling of 13117996772 in words is "thirteen billion, one hundred seventeen million, nine hundred ninety-six thousand, seven hundred seventy-two".