856954070293 has 2 divisors, whose sum is σ = 856954070294. Its totient is φ = 856954070292.

The previous prime is 856954070261. The next prime is 856954070299. The reversal of 856954070293 is 392070459658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 459659592324 + 397294477969 = 677982^2 + 630313^2 .

It is a cyclic number.

It is not a de Polignac number, because 856954070293 - 2⁵ = 856954070261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856954070299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428477035146 + 428477035147.

It is an arithmetic number, because the mean of its divisors is an integer number (428477035147).

Almost surely, 2^856954070293 is an apocalyptic number.

It is an amenable number.

856954070293 is a deficient number, since it is larger than the sum of its proper divisors (1).

856954070293 is an equidigital number, since it uses as much as digits as its factorization.

856954070293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16329600, while the sum is 58.

The spelling of 856954070293 in words is "eight hundred fifty-six billion, nine hundred fifty-four million, seventy thousand, two hundred ninety-three".