861359297833 has 2 divisors, whose sum is σ = 861359297834. Its totient is φ = 861359297832.

The previous prime is 861359297807. The next prime is 861359297923. The reversal of 861359297833 is 338792953168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 858656129769 + 2703168064 = 926637^2 + 51992^2 .

It is a cyclic number.

It is not a de Polignac number, because 861359297833 - 2²⁹ = 860822426921 is a prime.

It is not a weakly prime, because it can be changed into another prime (861359297803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430679648916 + 430679648917.

It is an arithmetic number, because the mean of its divisors is an integer number (430679648917).

Almost surely, 2^861359297833 is an apocalyptic number.

It is an amenable number.

861359297833 is a deficient number, since it is larger than the sum of its proper divisors (1).

861359297833 is an equidigital number, since it uses as much as digits as its factorization.

861359297833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58786560, while the sum is 64.

The spelling of 861359297833 in words is "eight hundred sixty-one billion, three hundred fifty-nine million, two hundred ninety-seven thousand, eight hundred thirty-three".