13263412256 has 48 divisors (see below), whose sum is σ = 26509948920. Its totient is φ = 6531317760.

The previous prime is 13263412243. The next prime is 13263412321. The reversal of 13263412256 is 65221436231.

It can be written as a sum of positive squares in 4 ways, for example, as 12060432400 + 1202979856 = 109820^2 + 34684^2 .

It is a super-2 number, since 2×13263412256² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 722876 + ... + 740996.

Almost surely, 2^13263412256 is an apocalyptic number.

13263412256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13263412256 is a deficient number, since it is larger than the sum of its proper divisors (13246536664).

13263412256 is a wasteful number, since it uses less digits than its factorization.

13263412256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18477 (or 18469 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

Adding to 13263412256 its reverse (65221436231), we get a palindrome (78484848487).

The spelling of 13263412256 in words is "thirteen billion, two hundred sixty-three million, four hundred twelve thousand, two hundred fifty-six".