13156446261 has 8 divisors (see below), whose sum is σ = 20047918144. Its totient is φ = 7517969280.

The previous prime is 13156446257. The next prime is 13156446263. The reversal of 13156446261 is 16264465131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13156446261 - 2² = 13156446257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13156446263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313248700 + ... + 313248741.

It is an arithmetic number, because the mean of its divisors is an integer number (2505989768).

Almost surely, 2^13156446261 is an apocalyptic number.

It is an amenable number.

13156446261 is a deficient number, since it is larger than the sum of its proper divisors (6891471883).

13156446261 is an equidigital number, since it uses as much as digits as its factorization.

13156446261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626497451.

The product of its digits is 103680, while the sum is 39.

The spelling of 13156446261 in words is "thirteen billion, one hundred fifty-six million, four hundred forty-six thousand, two hundred sixty-one".