18631402872703 has 2 divisors, whose sum is σ = 18631402872704. Its totient is φ = 18631402872702.

The previous prime is 18631402872659. The next prime is 18631402872809. The reversal of 18631402872703 is 30727820413681.

It is a weak prime.

It is an emirp because it is prime and its reverse (30727820413681) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18631402872703 - 2⁹ = 18631402872191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18631402876703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9315701436351 + 9315701436352.

It is an arithmetic number, because the mean of its divisors is an integer number (9315701436352).

Almost surely, 2^{18631402872703} is an apocalyptic number.

18631402872703 is a deficient number, since it is larger than the sum of its proper divisors (1).

18631402872703 is an equidigital number, since it uses as much as digits as its factorization.

18631402872703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 18631402872703 in words is "eighteen trillion, six hundred thirty-one billion, four hundred two million, eight hundred seventy-two thousand, seven hundred three".