12662699489 has 12 divisors (see below), whose sum is σ = 14257985700. Its totient is φ = 11230771200.

The previous prime is 12662699479. The next prime is 12662699503. The reversal of 12662699489 is 98499626621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5599977889 + 7062721600 = 74833^2 + 84040^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12662699489 is a prime.

It is a super-2 number, since 2×12662699489² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12662699419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1271264 + ... + 1281185.

It is an arithmetic number, because the mean of its divisors is an integer number (1188165475).

Almost surely, 2^12662699489 is an apocalyptic number.

It is an amenable number.

12662699489 is a deficient number, since it is larger than the sum of its proper divisors (1595286211).

12662699489 is a wasteful number, since it uses less digits than its factorization.

12662699489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552512 (or 2552501 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 62.

The spelling of 12662699489 in words is "twelve billion, six hundred sixty-two million, six hundred ninety-nine thousand, four hundred eighty-nine".