812988116093 has 2 divisors, whose sum is σ = 812988116094. Its totient is φ = 812988116092.

The previous prime is 812988115991. The next prime is 812988116107. The reversal of 812988116093 is 390611889218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 683775186649 + 129212929444 = 826907^2 + 359462^2 .

It is a cyclic number.

It is not a de Polignac number, because 812988116093 - 2²⁸ = 812719680637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812988118093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406494058046 + 406494058047.

It is an arithmetic number, because the mean of its divisors is an integer number (406494058047).

Almost surely, 2^812988116093 is an apocalyptic number.

It is an amenable number.

812988116093 is a deficient number, since it is larger than the sum of its proper divisors (1).

812988116093 is an equidigital number, since it uses as much as digits as its factorization.

812988116093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 56.

The spelling of 812988116093 in words is "eight hundred twelve billion, nine hundred eighty-eight million, one hundred sixteen thousand, ninety-three".