12665363451 has 24 divisors (see below), whose sum is σ = 18297203760. Its totient is φ = 7789332096.

The previous prime is 12665363437. The next prime is 12665363453. The reversal of 12665363451 is 15436356621.

It is not a de Polignac number, because 12665363451 - 2⁹ = 12665362939 is a prime.

It is a super-2 number, since 2×12665363451² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12665363453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 944985 + ... + 958293.

It is an arithmetic number, because the mean of its divisors is an integer number (762383490).

Almost surely, 2^12665363451 is an apocalyptic number.

12665363451 is a deficient number, since it is larger than the sum of its proper divisors (5631840309).

12665363451 is a wasteful number, since it uses less digits than its factorization.

12665363451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15215 (or 15202 counting only the distinct ones).

The product of its digits is 388800, while the sum is 42.

The spelling of 12665363451 in words is "twelve billion, six hundred sixty-five million, three hundred sixty-three thousand, four hundred fifty-one".