12864197451 has 32 divisors (see below), whose sum is σ = 19705817088. Its totient is φ = 7312343040.

The previous prime is 12864197447. The next prime is 12864197453. The reversal of 12864197451 is 15479146821.

It is not a de Polignac number, because 12864197451 - 2² = 12864197447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12864197451.

It is not an unprimeable number, because it can be changed into a prime (12864197453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5951811 + ... + 5953971.

It is an arithmetic number, because the mean of its divisors is an integer number (615806784).

Almost surely, 2^12864197451 is an apocalyptic number.

12864197451 is a deficient number, since it is larger than the sum of its proper divisors (6841619637).

12864197451 is a wasteful number, since it uses less digits than its factorization.

12864197451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3531.

The product of its digits is 483840, while the sum is 48.

The spelling of 12864197451 in words is "twelve billion, eight hundred sixty-four million, one hundred ninety-seven thousand, four hundred fifty-one".