13291054909 has 6 divisors (see below), whose sum is σ = 14609176190. Its totient is φ = 12082777080.

The previous prime is 13291054897. The next prime is 13291054927. The reversal of 13291054909 is 90945019231.

It can be written as a sum of positive squares in only one way, i.e., 11081772900 + 2209282009 = 105270^2 + 47003^2 .

It is not a de Polignac number, because 13291054909 - 2¹⁹ = 13290530621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13291054949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54921594 + ... + 54921835.

Almost surely, 2^13291054909 is an apocalyptic number.

It is an amenable number.

13291054909 is a deficient number, since it is larger than the sum of its proper divisors (1318121281).

13291054909 is a wasteful number, since it uses less digits than its factorization.

13291054909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109843451 (or 109843440 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 43.

The spelling of 13291054909 in words is "thirteen billion, two hundred ninety-one million, fifty-four thousand, nine hundred nine".