812479653347293 has 2 divisors, whose sum is σ = 812479653347294. Its totient is φ = 812479653347292.

The previous prime is 812479653347251. The next prime is 812479653347333. The reversal of 812479653347293 is 392743356974218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 643041451660644 + 169438201686649 = 25358262^2 + 13016843^2 .

It is a cyclic number.

It is not a de Polignac number, because 812479653347293 - 2²⁵ = 812479619792861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812479653347693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406239826673646 + 406239826673647.

It is an arithmetic number, because the mean of its divisors is an integer number (406239826673647).

Almost surely, 2^{812479653347293} is an apocalyptic number.

It is an amenable number.

812479653347293 is a deficient number, since it is larger than the sum of its proper divisors (1).

812479653347293 is an equidigital number, since it uses as much as digits as its factorization.

812479653347293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1646023680, while the sum is 73.

The spelling of 812479653347293 in words is "eight hundred twelve trillion, four hundred seventy-nine billion, six hundred fifty-three million, three hundred forty-seven thousand, two hundred ninety-three".