13542205091 has 4 divisors (see below), whose sum is σ = 13908210672. Its totient is φ = 13176199512.

The previous prime is 13542205069. The next prime is 13542205097. The reversal of 13542205091 is 19050224531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13542205091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13542205097) 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, 183002735 + ... + 183002808.

It is an arithmetic number, because the mean of its divisors is an integer number (3477052668).

Almost surely, 2^13542205091 is an apocalyptic number.

13542205091 is a deficient number, since it is larger than the sum of its proper divisors (366005581).

13542205091 is an equidigital number, since it uses as much as digits as its factorization.

13542205091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366005580.

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 13542205091 in words is "thirteen billion, five hundred forty-two million, two hundred five thousand, ninety-one".