12759994478 has 32 divisors (see below), whose sum is σ = 24045043968. Its totient is φ = 4933468800.

The previous prime is 12759994477. The next prime is 12759994523. The reversal of 12759994478 is 87449995721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12759994477) 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, 296075 + ... + 336422.

It is an arithmetic number, because the mean of its divisors is an integer number (751407624).

Almost surely, 2^12759994478 is an apocalyptic number.

12759994478 is a deficient number, since it is larger than the sum of its proper divisors (11285049490).

12759994478 is a wasteful number, since it uses less digits than its factorization.

12759994478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632648.

The product of its digits is 45722880, while the sum is 65.

The spelling of 12759994478 in words is "twelve billion, seven hundred fifty-nine million, nine hundred ninety-four thousand, four hundred seventy-eight".