870617284374839 has 2 divisors, whose sum is σ = 870617284374840. Its totient is φ = 870617284374838.

The previous prime is 870617284374833. The next prime is 870617284374863. The reversal of 870617284374839 is 938473482716078.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870617284374839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 870617284374839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870617284374833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435308642187419 + 435308642187420.

It is an arithmetic number, because the mean of its divisors is an integer number (435308642187420).

Almost surely, 2^{870617284374839} is an apocalyptic number.

870617284374839 is a deficient number, since it is larger than the sum of its proper divisors (1).

870617284374839 is an equidigital number, since it uses as much as digits as its factorization.

870617284374839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2731180032, while the sum is 77.

The spelling of 870617284374839 in words is "eight hundred seventy trillion, six hundred seventeen billion, two hundred eighty-four million, three hundred seventy-four thousand, eight hundred thirty-nine".