12789809494 has 32 divisors (see below), whose sum is σ = 23924102400. Its totient is φ = 4981897440.

The previous prime is 12789809491. The next prime is 12789809497. The reversal of 12789809494 is 49490898721.

It is an interprime number because it is at equal distance from previous prime (12789809491) and next prime (12789809497).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12789809491) 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, 1026997 + ... + 1039375.

It is an arithmetic number, because the mean of its divisors is an integer number (747628200).

Almost surely, 2^12789809494 is an apocalyptic number.

12789809494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12789809494 is a deficient number, since it is larger than the sum of its proper divisors (11134292906).

12789809494 is a wasteful number, since it uses less digits than its factorization.

12789809494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19108.

The product of its (nonzero) digits is 10450944, while the sum is 61.

The spelling of 12789809494 in words is "twelve billion, seven hundred eighty-nine million, eight hundred nine thousand, four hundred ninety-four".