13245870621 has 8 divisors (see below), whose sum is σ = 17670030400. Its totient is φ = 8826145632.

The previous prime is 13245870613. The next prime is 13245870707. The reversal of 13245870621 is 12607854231.

13245870621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13245870621 - 2³ = 13245870613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13245870621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13245872621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1101721 + ... + 1113678.

It is an arithmetic number, because the mean of its divisors is an integer number (2208753800).

Almost surely, 2^13245870621 is an apocalyptic number.

It is an amenable number.

13245870621 is a deficient number, since it is larger than the sum of its proper divisors (4424159779).

13245870621 is a wasteful number, since it uses less digits than its factorization.

13245870621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217395.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 13245870621 in words is "thirteen billion, two hundred forty-five million, eight hundred seventy thousand, six hundred twenty-one".