12981070091 has 6 divisors (see below), whose sum is σ = 14268449076. Its totient is φ = 11800972700.

The previous prime is 12981070079. The next prime is 12981070117. The reversal of 12981070091 is 19007018921.

12981070091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12981070091 - 2¹⁰ = 12981069067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12981070691) 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 5 ways as a sum of consecutive naturals, for example, 53640665 + ... + 53640906.

It is an arithmetic number, because the mean of its divisors is an integer number (2378074846).

Almost surely, 2^12981070091 is an apocalyptic number.

12981070091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12981070091 is a deficient number, since it is larger than the sum of its proper divisors (1287378985).

12981070091 is a wasteful number, since it uses less digits than its factorization.

12981070091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107281593 (or 107281582 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 38.

The spelling of 12981070091 in words is "twelve billion, nine hundred eighty-one million, seventy thousand, ninety-one".