13645514091 has 32 divisors (see below), whose sum is σ = 20519186688. Its totient is φ = 7994327040.

The previous prime is 13645514053. The next prime is 13645514137. The reversal of 13645514091 is 19041554631.

13645514091 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 13645514091 - 2⁷ = 13645513963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13645514021) 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 31 ways as a sum of consecutive naturals, for example, 88075 + ... + 187211.

It is an arithmetic number, because the mean of its divisors is an integer number (641224584).

Almost surely, 2^13645514091 is an apocalyptic number.

13645514091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13645514091 is a deficient number, since it is larger than the sum of its proper divisors (6873672597).

13645514091 is a wasteful number, since it uses less digits than its factorization.

13645514091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99291.

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 13645514091 in words is "thirteen billion, six hundred forty-five million, five hundred fourteen thousand, ninety-one".