1585872857243 has 2 divisors, whose sum is σ = 1585872857244. Its totient is φ = 1585872857242.

The previous prime is 1585872857227. The next prime is 1585872857287. The reversal of 1585872857243 is 3427582785851.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1585872857243 - 2⁴ = 1585872857227 is a prime.

It is a super-2 number, since 2×1585872857243² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1585872857243.

It is not a weakly prime, because it can be changed into another prime (1585872857293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 792936428621 + 792936428622.

It is an arithmetic number, because the mean of its divisors is an integer number (792936428622).

Almost surely, 2^{1585872857243} is an apocalyptic number.

1585872857243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1585872857243 is an equidigital number, since it uses as much as digits as its factorization.

1585872857243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150528000, while the sum is 65.

The spelling of 1585872857243 in words is "one trillion, five hundred eighty-five billion, eight hundred seventy-two million, eight hundred fifty-seven thousand, two hundred forty-three".