13261140612 has 24 divisors (see below), whose sum is σ = 34380735200. Its totient is φ = 4420380168.

The previous prime is 13261140587. The next prime is 13261140667. The reversal of 13261140612 is 21604116231.

It is a happy number.

13261140612 is a `hidden beast` number, since 1 + 3 + 2 + 6 + 1 + 1 + 40 + 612 = 666.

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

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, 61394062 + ... + 61394277.

Almost surely, 2^13261140612 is an apocalyptic number.

13261140612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13261140612 is an abundant number, since it is smaller than the sum of its proper divisors (21119594588).

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

13261140612 is a wasteful number, since it uses less digits than its factorization.

13261140612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122788352 (or 122788344 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 13261140612 its reverse (21604116231), we get a palindrome (34865256843).

The spelling of 13261140612 in words is "thirteen billion, two hundred sixty-one million, one hundred forty thousand, six hundred twelve".