18468677503 has 2 divisors, whose sum is σ = 18468677504. Its totient is φ = 18468677502.

The previous prime is 18468677431. The next prime is 18468677527. The reversal of 18468677503 is 30577686481.

It is a strong prime.

It is an emirp because it is prime and its reverse (30577686481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18468677503 - 2¹⁷ = 18468546431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18468677543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9234338751 + 9234338752.

It is an arithmetic number, because the mean of its divisors is an integer number (9234338752).

Almost surely, 2^18468677503 is an apocalyptic number.

18468677503 is a deficient number, since it is larger than the sum of its proper divisors (1).

18468677503 is an equidigital number, since it uses as much as digits as its factorization.

18468677503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 18468677503 in words is "eighteen billion, four hundred sixty-eight million, six hundred seventy-seven thousand, five hundred three".