13716521956 has 12 divisors (see below), whose sum is σ = 24589375020. Its totient is φ = 6690986240.

The previous prime is 13716521947. The next prime is 13716522023. The reversal of 13716521956 is 65912561731.

It can be written as a sum of positive squares in 2 ways, for example, as 3676481956 + 10040040000 = 60634^2 + 100200^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41818501 + ... + 41818828.

It is an arithmetic number, because the mean of its divisors is an integer number (2049114585).

Almost surely, 2^13716521956 is an apocalyptic number.

It is an amenable number.

13716521956 is a deficient number, since it is larger than the sum of its proper divisors (10872853064).

13716521956 is a wasteful number, since it uses less digits than its factorization.

13716521956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83637374 (or 83637372 counting only the distinct ones).

The product of its digits is 340200, while the sum is 46.

The spelling of 13716521956 in words is "thirteen billion, seven hundred sixteen million, five hundred twenty-one thousand, nine hundred fifty-six".