864820814293 has 2 divisors, whose sum is σ = 864820814294. Its totient is φ = 864820814292.

The previous prime is 864820814267. The next prime is 864820814371. The reversal of 864820814293 is 392418028468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 780074035524 + 84746778769 = 883218^2 + 291113^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864820814293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864820814213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432410407146 + 432410407147.

It is an arithmetic number, because the mean of its divisors is an integer number (432410407147).

Almost surely, 2^864820814293 is an apocalyptic number.

It is an amenable number.

864820814293 is a deficient number, since it is larger than the sum of its proper divisors (1).

864820814293 is an equidigital number, since it uses as much as digits as its factorization.

864820814293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5308416, while the sum is 55.

The spelling of 864820814293 in words is "eight hundred sixty-four billion, eight hundred twenty million, eight hundred fourteen thousand, two hundred ninety-three".