18235644958144 has 14 divisors (see below), whose sum is σ = 36186357963944. Its totient is φ = 9117822479040.

The previous prime is 18235644958109. The next prime is 18235644958151. The reversal of 18235644958144 is 44185944653281.

It is a Harshad number since it is a multiple of its sum of digits (64), and also a Moran number because the ratio is a prime number: 284931952471 = 18235644958144 / (1 + 8 + 2 + 3 + 5 + 6 + 4 + 4 + 9 + 5 + 8 + 1 + 4 + 4).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142465976172 + ... + 142465976299.

Almost surely, 2^{18235644958144} is an apocalyptic number.

It is an amenable number.

18235644958144 is a deficient number, since it is larger than the sum of its proper divisors (17950713005800).

18235644958144 is an equidigital number, since it uses as much as digits as its factorization.

18235644958144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284931952483 (or 284931952473 counting only the distinct ones).

The product of its digits is 132710400, while the sum is 64.

The spelling of 18235644958144 in words is "eighteen trillion, two hundred thirty-five billion, six hundred forty-four million, nine hundred fifty-eight thousand, one hundred forty-four".