800680511663 has 2 divisors, whose sum is σ = 800680511664. Its totient is φ = 800680511662.

The previous prime is 800680511597. The next prime is 800680511681. The reversal of 800680511663 is 366115086008.

800680511663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800680511663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800680541663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400340255831 + 400340255832.

It is an arithmetic number, because the mean of its divisors is an integer number (400340255832).

Almost surely, 2^800680511663 is an apocalyptic number.

800680511663 is a deficient number, since it is larger than the sum of its proper divisors (1).

800680511663 is an equidigital number, since it uses as much as digits as its factorization.

800680511663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 800680511663 in words is "eight hundred billion, six hundred eighty million, five hundred eleven thousand, six hundred sixty-three".