13261516156267 has 4 divisors (see below), whose sum is σ = 13261587967600. Its totient is φ = 13261444344936.

The previous prime is 13261516156171. The next prime is 13261516156283. The reversal of 13261516156267 is 76265161516231.

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 13261516156267 - 2²³ = 13261507767659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13261516159267) 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, 35627943 + ... + 35998240.

It is an arithmetic number, because the mean of its divisors is an integer number (3315396991900).

Almost surely, 2^{13261516156267} is an apocalyptic number.

13261516156267 is a deficient number, since it is larger than the sum of its proper divisors (71811333).

13261516156267 is an equidigital number, since it uses as much as digits as its factorization.

13261516156267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71811332.

The product of its digits is 2721600, while the sum is 52.

The spelling of 13261516156267 in words is "thirteen trillion, two hundred sixty-one billion, five hundred sixteen million, one hundred fifty-six thousand, two hundred sixty-seven".