13690551091 has 4 divisors (see below), whose sum is σ = 15646344112. Its totient is φ = 11734758072.

The previous prime is 13690551089. The next prime is 13690551097. The reversal of 13690551091 is 19015509631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13690551091 - 2¹ = 13690551089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13690551097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977896500 + ... + 977896513.

It is an arithmetic number, because the mean of its divisors is an integer number (3911586028).

Almost surely, 2^13690551091 is an apocalyptic number.

13690551091 is a deficient number, since it is larger than the sum of its proper divisors (1955793021).

13690551091 is an equidigital number, since it uses as much as digits as its factorization.

13690551091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955793020.

The product of its (nonzero) digits is 36450, while the sum is 40.

The spelling of 13690551091 in words is "thirteen billion, six hundred ninety million, five hundred fifty-one thousand, ninety-one".