18757633672243 has 2 divisors, whose sum is σ = 18757633672244. Its totient is φ = 18757633672242.

The previous prime is 18757633672241. The next prime is 18757633672333. The reversal of 18757633672243 is 34227633675781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18757633672243 - 2¹ = 18757633672241 is a prime.

Together with 18757633672241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18757633672241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9378816836121 + 9378816836122.

It is an arithmetic number, because the mean of its divisors is an integer number (9378816836122).

Almost surely, 2^{18757633672243} is an apocalyptic number.

18757633672243 is a deficient number, since it is larger than the sum of its proper divisors (1).

18757633672243 is an equidigital number, since it uses as much as digits as its factorization.

18757633672243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 213373440, while the sum is 64.

The spelling of 18757633672243 in words is "eighteen trillion, seven hundred fifty-seven billion, six hundred thirty-three million, six hundred seventy-two thousand, two hundred forty-three".