12909491094 has 16 divisors (see below), whose sum is σ = 26007443568. Its totient is φ = 4271753472.

The previous prime is 12909491033. The next prime is 12909491099. The reversal of 12909491094 is 49019490921.

It is a happy number.

12909491094 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12909491099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7851667 + ... + 7853310.

It is an arithmetic number, because the mean of its divisors is an integer number (1625465223).

Almost surely, 2^12909491094 is an apocalyptic number.

12909491094 is an abundant number, since it is smaller than the sum of its proper divisors (13097952474).

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

12909491094 is a wasteful number, since it uses less digits than its factorization.

12909491094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15705119.

The product of its (nonzero) digits is 209952, while the sum is 48.

The spelling of 12909491094 in words is "twelve billion, nine hundred nine million, four hundred ninety-one thousand, ninety-four".