13257227655 has 96 divisors (see below), whose sum is σ = 27278684160. Its totient is φ = 5828267520.

The previous prime is 13257227651. The next prime is 13257227671. The reversal of 13257227655 is 55672275231.

13257227655 is a `hidden beast` number, since 1 + 3 + 2 + 572 + 2 + 76 + 5 + 5 = 666.

13257227655 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 13257227655 - 2² = 13257227651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 13257227655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13257227651) 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 95 ways as a sum of consecutive naturals, for example, 1587531 + ... + 1595859.

It is an arithmetic number, because the mean of its divisors is an integer number (284152960).

Almost surely, 2^13257227655 is an apocalyptic number.

13257227655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13257227655 is an abundant number, since it is smaller than the sum of its proper divisors (14021456505).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13257227655 is a wasteful number, since it uses less digits than its factorization.

13257227655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8541 (or 8538 counting only the distinct ones).

The product of its digits is 882000, while the sum is 45.

The spelling of 13257227655 in words is "thirteen billion, two hundred fifty-seven million, two hundred twenty-seven thousand, six hundred fifty-five".