13864372506 has 32 divisors (see below), whose sum is σ = 31082382720. Its totient is φ = 4580557632.

The previous prime is 13864372439. The next prime is 13864372531. The reversal of 13864372506 is 60527346831.

13864372506 is a `hidden beast` number, since 1 + 38 + 6 + 43 + 72 + 506 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1129950 + ... + 1142153.

It is an arithmetic number, because the mean of its divisors is an integer number (971324460).

Almost surely, 2^13864372506 is an apocalyptic number.

13864372506 is an abundant number, since it is smaller than the sum of its proper divisors (17218010214).

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

13864372506 is a wasteful number, since it uses less digits than its factorization.

13864372506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272227 (or 2272221 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 13864372506 in words is "thirteen billion, eight hundred sixty-four million, three hundred seventy-two thousand, five hundred six".