11817280980514 has 16 divisors (see below), whose sum is σ = 17729751108600. Its totient is φ = 5907364089984.

The previous prime is 11817280980467. The next prime is 11817280980553. The reversal of 11817280980514 is 41508908271811.

It can be written as a sum of positive squares in 4 ways, for example, as 11801801390625 + 15479589889 = 3435375^2 + 124417^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239051152 + ... + 239100580.

Almost surely, 2^{11817280980514} is an apocalyptic number.

11817280980514 is a deficient number, since it is larger than the sum of its proper divisors (5912470128086).

11817280980514 is a wasteful number, since it uses less digits than its factorization.

11817280980514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72837.

The product of its (nonzero) digits is 1290240, while the sum is 55.

The spelling of 11817280980514 in words is "eleven trillion, eight hundred seventeen billion, two hundred eighty million, nine hundred eighty thousand, five hundred fourteen".