13255991895 has 16 divisors (see below), whose sum is σ = 21292120800. Its totient is φ = 7042351104.

The previous prime is 13255991891. The next prime is 13255991897. The reversal of 13255991895 is 59819955231.

It is a happy number.

13255991895 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 13255991895 - 2² = 13255991891 is a prime.

It is a super-2 number, since 2×13255991895² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13255991891) 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, 1715470 + ... + 1723179.

It is an arithmetic number, because the mean of its divisors is an integer number (1330757550).

Almost surely, 2^13255991895 is an apocalyptic number.

13255991895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13255991895 is a deficient number, since it is larger than the sum of its proper divisors (8036128905).

13255991895 is a wasteful number, since it uses less digits than its factorization.

13255991895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3438914.

The product of its digits is 4374000, while the sum is 57.

The spelling of 13255991895 in words is "thirteen billion, two hundred fifty-five million, nine hundred ninety-one thousand, eight hundred ninety-five".