13156272405 has 12 divisors (see below), whose sum is σ = 22804205580. Its totient is φ = 7016678592.

The previous prime is 13156272401. The next prime is 13156272407. The reversal of 13156272405 is 50427265131.

13156272405 is a `hidden beast` number, since 1 + 3 + 1 + 5 + 627 + 24 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10017807921 + 3138464484 = 100089^2 + 56022^2 .

It is not a de Polignac number, because 13156272405 - 2² = 13156272401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13156272405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13156272401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146180760 + ... + 146180849.

It is an arithmetic number, because the mean of its divisors is an integer number (1900350465).

Almost surely, 2^13156272405 is an apocalyptic number.

13156272405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13156272405 is a deficient number, since it is larger than the sum of its proper divisors (9647933175).

13156272405 is a wasteful number, since it uses less digits than its factorization.

13156272405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292361620 (or 292361617 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 13156272405 in words is "thirteen billion, one hundred fifty-six million, two hundred seventy-two thousand, four hundred five".