13261780227 has 16 divisors (see below), whose sum is σ = 18875185920. Its totient is φ = 8257888800.

The previous prime is 13261780211. The next prime is 13261780267. The reversal of 13261780227 is 72208716231.

13261780227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13261780227 - 2⁴ = 13261780211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13261780267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1634424 + ... + 1642517.

It is an arithmetic number, because the mean of its divisors is an integer number (1179699120).

Almost surely, 2^13261780227 is an apocalyptic number.

13261780227 is a deficient number, since it is larger than the sum of its proper divisors (5613405693).

13261780227 is a wasteful number, since it uses less digits than its factorization.

13261780227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277034.

The product of its (nonzero) digits is 56448, while the sum is 39.

The spelling of 13261780227 in words is "thirteen billion, two hundred sixty-one million, seven hundred eighty thousand, two hundred twenty-seven".