618039817663 has 2 divisors, whose sum is σ = 618039817664. Its totient is φ = 618039817662.

The previous prime is 618039817627. The next prime is 618039817667. The reversal of 618039817663 is 366718930816.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 618039817663 - 2²⁹ = 617502946751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 618039817598 and 618039817607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618039817667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309019908831 + 309019908832.

It is an arithmetic number, because the mean of its divisors is an integer number (309019908832).

Almost surely, 2^618039817663 is an apocalyptic number.

618039817663 is a deficient number, since it is larger than the sum of its proper divisors (1).

618039817663 is an equidigital number, since it uses as much as digits as its factorization.

618039817663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 618039817663 in words is "six hundred eighteen billion, thirty-nine million, eight hundred seventeen thousand, six hundred sixty-three".