12765994395 has 32 divisors (see below), whose sum is σ = 25465674240. Its totient is φ = 5305347840.

The previous prime is 12765994369. The next prime is 12765994403. The reversal of 12765994395 is 59349956721.

It is not a de Polignac number, because 12765994395 - 2²⁶ = 12698885531 is a prime.

It is a super-2 number, since 2×12765994395² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5525250 + ... + 5527559.

It is an arithmetic number, because the mean of its divisors is an integer number (795802320).

Almost surely, 2^12765994395 is an apocalyptic number.

12765994395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12765994395 is a deficient number, since it is larger than the sum of its proper divisors (12699679845).

12765994395 is a wasteful number, since it uses less digits than its factorization.

12765994395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11052835.

The product of its digits is 18370800, while the sum is 60.

The spelling of 12765994395 in words is "twelve billion, seven hundred sixty-five million, nine hundred ninety-four thousand, three hundred ninety-five".