13611872945 has 16 divisors (see below), whose sum is σ = 17821444608. Its totient is φ = 9898285440.

The previous prime is 13611872921. The next prime is 13611872951. The reversal of 13611872945 is 54927811631.

13611872945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13611872945 - 2⁸ = 13611872689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13611872945.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 852677 + ... + 868493.

It is an arithmetic number, because the mean of its divisors is an integer number (1113840288).

Almost surely, 2^13611872945 is an apocalyptic number.

It is an amenable number.

13611872945 is a deficient number, since it is larger than the sum of its proper divisors (4209571663).

13611872945 is a wasteful number, since it uses less digits than its factorization.

13611872945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31480.

The product of its digits is 362880, while the sum is 47.

The spelling of 13611872945 in words is "thirteen billion, six hundred eleven million, eight hundred seventy-two thousand, nine hundred forty-five".