18072350663 has 2 divisors, whose sum is σ = 18072350664. Its totient is φ = 18072350662.

The previous prime is 18072350657. The next prime is 18072350693. The reversal of 18072350663 is 36605327081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18072350663 - 2⁸ = 18072350407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18072350663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18072350603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9036175331 + 9036175332.

It is an arithmetic number, because the mean of its divisors is an integer number (9036175332).

Almost surely, 2^18072350663 is an apocalyptic number.

18072350663 is a deficient number, since it is larger than the sum of its proper divisors (1).

18072350663 is an equidigital number, since it uses as much as digits as its factorization.

18072350663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 18072350663 in words is "eighteen billion, seventy-two million, three hundred fifty thousand, six hundred sixty-three".