85399240319 has 2 divisors, whose sum is σ = 85399240320. Its totient is φ = 85399240318.

The previous prime is 85399240253. The next prime is 85399240357. The reversal of 85399240319 is 91304299358.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85399240319 - 2⁸ = 85399240063 is a prime.

It is a super-2 number, since 2×85399240319² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85399240379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42699620159 + 42699620160.

It is an arithmetic number, because the mean of its divisors is an integer number (42699620160).

Almost surely, 2^85399240319 is an apocalyptic number.

85399240319 is a deficient number, since it is larger than the sum of its proper divisors (1).

85399240319 is an equidigital number, since it uses as much as digits as its factorization.

85399240319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The spelling of 85399240319 in words is "eighty-five billion, three hundred ninety-nine million, two hundred forty thousand, three hundred nineteen".