13245630640 has 40 divisors (see below), whose sum is σ = 33595738128. Its totient is φ = 4816592640.

The previous prime is 13245630599. The next prime is 13245630667. The reversal of 13245630640 is 4603654231.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 13245630596 and 13245630605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7525047 + ... + 7526806.

Almost surely, 2^13245630640 is an apocalyptic number.

13245630640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13245630640 is an abundant number, since it is smaller than the sum of its proper divisors (20350107488).

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

13245630640 is a wasteful number, since it uses less digits than its factorization.

13245630640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15051877 (or 15051871 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The spelling of 13245630640 in words is "thirteen billion, two hundred forty-five million, six hundred thirty thousand, six hundred forty".