13191656449024 has 33 divisors (see below), whose sum is σ = 26370662759641. Its totient is φ = 6595770112000.

The previous prime is 13191656449007. The next prime is 13191656449163. The reversal of 13191656449024 is 42094465619131.

The square root of 13191656449024 is 3632032.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 10046567015424 + 3145089433600 = 3169632^2 + 1773440^2 .

It is a super-2 number, since 2×13191656449024² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 116168274 + ... + 116281774.

Almost surely, 2^{13191656449024} is an apocalyptic number.

13191656449024 is the 3632032-nd square number.

It is an amenable number.

13191656449024 is a deficient number, since it is larger than the sum of its proper divisors (13179006310617).

13191656449024 is an frugal number, since it uses more digits than its factorization.

13191656449024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227022 (or 113503 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 55.

The spelling of 13191656449024 in words is "thirteen trillion, one hundred ninety-one billion, six hundred fifty-six million, four hundred forty-nine thousand, twenty-four".