13985251945 has 24 divisors (see below), whose sum is σ = 19529524224. Its totient is φ = 9586323936.

The previous prime is 13985251937. The next prime is 13985251981. The reversal of 13985251945 is 54915258931.

It is not a de Polignac number, because 13985251945 - 2³ = 13985251937 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13985251892 and 13985251901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 765912 + ... + 783958.

It is an arithmetic number, because the mean of its divisors is an integer number (813730176).

Almost surely, 2^13985251945 is an apocalyptic number.

It is an amenable number.

13985251945 is a deficient number, since it is larger than the sum of its proper divisors (5544272279).

13985251945 is a wasteful number, since it uses less digits than its factorization.

13985251945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21229 (or 21222 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 52.

The spelling of 13985251945 in words is "thirteen billion, nine hundred eighty-five million, two hundred fifty-one thousand, nine hundred forty-five".