18913643142875 has 32 divisors (see below), whose sum is σ = 25899557943168. Its totient is φ = 13703469686400.

The previous prime is 18913643142869. The next prime is 18913643142893. The reversal of 18913643142875 is 57824134631981.

It is a happy number.

It is not a de Polignac number, because 18913643142875 - 2¹⁴ = 18913643126491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109717319 + ... + 109889568.

It is an arithmetic number, because the mean of its divisors is an integer number (809361185724).

Almost surely, 2^{18913643142875} is an apocalyptic number.

18913643142875 is a deficient number, since it is larger than the sum of its proper divisors (6985914800293).

18913643142875 is a wasteful number, since it uses less digits than its factorization.

18913643142875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219606968 (or 219606958 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 62.

The spelling of 18913643142875 in words is "eighteen trillion, nine hundred thirteen billion, six hundred forty-three million, one hundred forty-two thousand, eight hundred seventy-five".