13621642245 has 48 divisors (see below), whose sum is σ = 24881530752. Its totient is φ = 6880156800.

The previous prime is 13621642183. The next prime is 13621642253. The reversal of 13621642245 is 54224612631.

13621642245 is a `hidden beast` number, since 1 + 3 + 6 + 2 + 1 + 642 + 2 + 4 + 5 = 666.

It is not a de Polignac number, because 13621642245 - 2¹⁹ = 13621117957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39382 + ... + 169688.

It is an arithmetic number, because the mean of its divisors is an integer number (518365224).

Almost surely, 2^13621642245 is an apocalyptic number.

13621642245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13621642245 is a deficient number, since it is larger than the sum of its proper divisors (11259888507).

13621642245 is a wasteful number, since it uses less digits than its factorization.

13621642245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130442 (or 130439 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The spelling of 13621642245 in words is "thirteen billion, six hundred twenty-one million, six hundred forty-two thousand, two hundred forty-five".