56851799293 has 2 divisors, whose sum is σ = 56851799294. Its totient is φ = 56851799292.

The previous prime is 56851799149. The next prime is 56851799309. The reversal of 56851799293 is 39299715865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30955587364 + 25896211929 = 175942^2 + 160923^2 .

It is a cyclic number.

It is not a de Polignac number, because 56851799293 - 2⁹ = 56851798781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56851799393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28425899646 + 28425899647.

It is an arithmetic number, because the mean of its divisors is an integer number (28425899647).

Almost surely, 2^56851799293 is an apocalyptic number.

It is an amenable number.

56851799293 is a deficient number, since it is larger than the sum of its proper divisors (1).

56851799293 is an equidigital number, since it uses as much as digits as its factorization.

56851799293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36741600, while the sum is 64.

The spelling of 56851799293 in words is "fifty-six billion, eight hundred fifty-one million, seven hundred ninety-nine thousand, two hundred ninety-three".