12665535274 has 16 divisors (see below), whose sum is σ = 22412745216. Its totient is φ = 5252986800.

The previous prime is 12665535257. The next prime is 12665535283. The reversal of 12665535274 is 47253556621.

It is a happy number.

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, 14591197 + ... + 14592064.

It is an arithmetic number, because the mean of its divisors is an integer number (1400796576).

Almost surely, 2^12665535274 is an apocalyptic number.

12665535274 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12665535274 is a deficient number, since it is larger than the sum of its proper divisors (9747209942).

12665535274 is a wasteful number, since it uses less digits than its factorization.

12665535274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29183301.

The product of its digits is 1512000, while the sum is 46.

The spelling of 12665535274 in words is "twelve billion, six hundred sixty-five million, five hundred thirty-five thousand, two hundred seventy-four".