856144869337 has 2 divisors, whose sum is σ = 856144869338. Its totient is φ = 856144869336.

The previous prime is 856144869247. The next prime is 856144869383. The reversal of 856144869337 is 733968441658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 656612019856 + 199532849481 = 810316^2 + 446691^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-856144869337 is a prime.

It is not a weakly prime, because it can be changed into another prime (856144869037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428072434668 + 428072434669.

It is an arithmetic number, because the mean of its divisors is an integer number (428072434669).

Almost surely, 2^856144869337 is an apocalyptic number.

It is an amenable number.

856144869337 is a deficient number, since it is larger than the sum of its proper divisors (1).

856144869337 is an equidigital number, since it uses as much as digits as its factorization.

856144869337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104509440, while the sum is 64.

The spelling of 856144869337 in words is "eight hundred fifty-six billion, one hundred forty-four million, eight hundred sixty-nine thousand, three hundred thirty-seven".