12791142563 has 16 divisors (see below), whose sum is σ = 13204915200. Its totient is φ = 12385638720.

The previous prime is 12791142557. The next prime is 12791142577. The reversal of 12791142563 is 36524119721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12791142563 is a prime.

It is a super-2 number, since 2×12791142563² (a number of 21 digits) contains 22 as substring.

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 12791142563.

It is not an unprimeable number, because it can be changed into a prime (12791142523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1026098 + ... + 1038488.

It is an arithmetic number, because the mean of its divisors is an integer number (825307200).

Almost surely, 2^12791142563 is an apocalyptic number.

12791142563 is a deficient number, since it is larger than the sum of its proper divisors (413772637).

12791142563 is a wasteful number, since it uses less digits than its factorization.

12791142563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12722.

The product of its digits is 90720, while the sum is 41.

The spelling of 12791142563 in words is "twelve billion, seven hundred ninety-one million, one hundred forty-two thousand, five hundred sixty-three".