12260779513 has 4 divisors (see below), whose sum is σ = 12278270628. Its totient is φ = 12243288400.

The previous prime is 12260779499. The next prime is 12260779519. The reversal of 12260779513 is 31597706221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31597706221 = 59441 ⋅531581.

It can be written as a sum of positive squares in 2 ways, for example, as 11191947264 + 1068832249 = 105792^2 + 32693^2 .

It is a cyclic number.

It is not a de Polignac number, because 12260779513 - 2²⁵ = 12227225081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12260779513.

It is not an unprimeable number, because it can be changed into a prime (12260779519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8744506 + ... + 8745907.

It is an arithmetic number, because the mean of its divisors is an integer number (3069567657).

Almost surely, 2^12260779513 is an apocalyptic number.

It is an amenable number.

12260779513 is a deficient number, since it is larger than the sum of its proper divisors (17491115).

12260779513 is an equidigital number, since it uses as much as digits as its factorization.

12260779513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17491114.

The product of its (nonzero) digits is 158760, while the sum is 43.

The spelling of 12260779513 in words is "twelve billion, two hundred sixty million, seven hundred seventy-nine thousand, five hundred thirteen".