13257266532091 has 4 divisors (see below), whose sum is σ = 13474598770384. Its totient is φ = 13039934293800.

The previous prime is 13257266532053. The next prime is 13257266532157. The reversal of 13257266532091 is 19023566275231.

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-13257266532091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13257266532691) 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, 108666119055 + ... + 108666119176.

It is an arithmetic number, because the mean of its divisors is an integer number (3368649692596).

Almost surely, 2^{13257266532091} is an apocalyptic number.

13257266532091 is a deficient number, since it is larger than the sum of its proper divisors (217332238293).

13257266532091 is an equidigital number, since it uses as much as digits as its factorization.

13257266532091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217332238292.

The product of its (nonzero) digits is 4082400, while the sum is 52.

The spelling of 13257266532091 in words is "thirteen trillion, two hundred fifty-seven billion, two hundred sixty-six million, five hundred thirty-two thousand, ninety-one".