18875782744627 has 2 divisors, whose sum is σ = 18875782744628. Its totient is φ = 18875782744626.

The previous prime is 18875782744477. The next prime is 18875782744649. The reversal of 18875782744627 is 72644728757881.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18875782744627 is a prime.

It is not a weakly prime, because it can be changed into another prime (18875782744697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9437891372313 + 9437891372314.

It is an arithmetic number, because the mean of its divisors is an integer number (9437891372314).

Almost surely, 2^{18875782744627} is an apocalyptic number.

18875782744627 is a deficient number, since it is larger than the sum of its proper divisors (1).

18875782744627 is an equidigital number, since it uses as much as digits as its factorization.

18875782744627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2360279040, while the sum is 76.

The spelling of 18875782744627 in words is "eighteen trillion, eight hundred seventy-five billion, seven hundred eighty-two million, seven hundred forty-four thousand, six hundred twenty-seven".