13261116312 has 32 divisors (see below), whose sum is σ = 36836434800. Its totient is φ = 4420372032.

The previous prime is 13261116311. The next prime is 13261116347. The reversal of 13261116312 is 21361116231.

It is a happy number.

13261116312 is a `hidden beast` number, since 1 + 3 + 2 + 611 + 16 + 31 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13261116311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30696813 + ... + 30697244.

Almost surely, 2^13261116312 is an apocalyptic number.

13261116312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13261116312 is an abundant number, since it is smaller than the sum of its proper divisors (23575318488).

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

13261116312 is a wasteful number, since it uses less digits than its factorization.

13261116312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61394072 (or 61394062 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The spelling of 13261116312 in words is "thirteen billion, two hundred sixty-one million, one hundred sixteen thousand, three hundred twelve".