816248954063 has 2 divisors, whose sum is σ = 816248954064. Its totient is φ = 816248954062.

The previous prime is 816248954009. The next prime is 816248954093. The reversal of 816248954063 is 360459842618.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-816248954063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (816248954093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408124477031 + 408124477032.

It is an arithmetic number, because the mean of its divisors is an integer number (408124477032).

Almost surely, 2^816248954063 is an apocalyptic number.

816248954063 is a deficient number, since it is larger than the sum of its proper divisors (1).

816248954063 is an equidigital number, since it uses as much as digits as its factorization.

816248954063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9953280, while the sum is 56.

The spelling of 816248954063 in words is "eight hundred sixteen billion, two hundred forty-eight million, nine hundred fifty-four thousand, sixty-three".