318877505663 has 2 divisors, whose sum is σ = 318877505664. Its totient is φ = 318877505662.

The previous prime is 318877505633. The next prime is 318877505669. The reversal of 318877505663 is 366505778813.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318877505663 - 2⁶ = 318877505599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318877505669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159438752831 + 159438752832.

It is an arithmetic number, because the mean of its divisors is an integer number (159438752832).

Almost surely, 2^318877505663 is an apocalyptic number.

318877505663 is a deficient number, since it is larger than the sum of its proper divisors (1).

318877505663 is an equidigital number, since it uses as much as digits as its factorization.

318877505663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25401600, while the sum is 59.

The spelling of 318877505663 in words is "three hundred eighteen billion, eight hundred seventy-seven million, five hundred five thousand, six hundred sixty-three".