856592479993 has 2 divisors, whose sum is σ = 856592479994. Its totient is φ = 856592479992.

The previous prime is 856592479991. The next prime is 856592480039. The reversal of 856592479993 is 399974295658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 844437858489 + 12154621504 = 918933^2 + 110248^2 .

It is a cyclic number.

It is not a de Polignac number, because 856592479993 - 2¹ = 856592479991 is a prime.

Together with 856592479991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (856592479991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428296239996 + 428296239997.

It is an arithmetic number, because the mean of its divisors is an integer number (428296239997).

Almost surely, 2^856592479993 is an apocalyptic number.

It is an amenable number.

856592479993 is a deficient number, since it is larger than the sum of its proper divisors (1).

856592479993 is an equidigital number, since it uses as much as digits as its factorization.

856592479993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1322697600, while the sum is 76.

It can be divided in two parts, 85659 and 2479993, that added together give a palindrome (2565652).

The spelling of 856592479993 in words is "eight hundred fifty-six billion, five hundred ninety-two million, four hundred seventy-nine thousand, nine hundred ninety-three".