18775712503 has 2 divisors, whose sum is σ = 18775712504. Its totient is φ = 18775712502.

The previous prime is 18775712489. The next prime is 18775712533. The reversal of 18775712503 is 30521757781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18775712503 - 2⁹ = 18775711991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18775712533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9387856251 + 9387856252.

It is an arithmetic number, because the mean of its divisors is an integer number (9387856252).

Almost surely, 2^18775712503 is an apocalyptic number.

18775712503 is a deficient number, since it is larger than the sum of its proper divisors (1).

18775712503 is an equidigital number, since it uses as much as digits as its factorization.

18775712503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 411600, while the sum is 46.

The spelling of 18775712503 in words is "eighteen billion, seven hundred seventy-five million, seven hundred twelve thousand, five hundred three".