12945012795 has 48 divisors (see below), whose sum is σ = 26360766432. Its totient is φ = 5793569280.

The previous prime is 12945012793. The next prime is 12945012799. The reversal of 12945012795 is 59721054921.

12945012795 is a `hidden beast` number, since 129 + 450 + 1 + 2 + 79 + 5 = 666.

It is not a de Polignac number, because 12945012795 - 2¹ = 12945012793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12945012795.

It is not an unprimeable number, because it can be changed into a prime (12945012793) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 999394 + ... + 1012263.

It is an arithmetic number, because the mean of its divisors is an integer number (549182634).

Almost surely, 2^12945012795 is an apocalyptic number.

12945012795 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12945012795 is an abundant number, since it is smaller than the sum of its proper divisors (13415753637).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12945012795 is a wasteful number, since it uses less digits than its factorization.

12945012795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011692 (or 2011689 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The spelling of 12945012795 in words is "twelve billion, nine hundred forty-five million, twelve thousand, seven hundred ninety-five".