13134357640 has 16 divisors (see below), whose sum is σ = 29552304780. Its totient is φ = 5253743040.

The previous prime is 13134357623. The next prime is 13134357661. The reversal of 13134357640 is 4675343131.

It can be written as a sum of positive squares in 2 ways, for example, as 12733316964 + 401040676 = 112842^2 + 20026^2 .

It is a super-2 number, since 2×13134357640² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13134357640.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164179431 + ... + 164179510.

Almost surely, 2^13134357640 is an apocalyptic number.

13134357640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13134357640 is an abundant number, since it is smaller than the sum of its proper divisors (16417947140).

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

13134357640 is a wasteful number, since it uses less digits than its factorization.

13134357640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328358952 (or 328358948 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 13134357640 in words is "thirteen billion, one hundred thirty-four million, three hundred fifty-seven thousand, six hundred forty".