85723007239 has 2 divisors, whose sum is σ = 85723007240. Its totient is φ = 85723007238.

The previous prime is 85723007219. The next prime is 85723007327. The reversal of 85723007239 is 93270032758.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85723007239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85723007219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42861503619 + 42861503620.

It is an arithmetic number, because the mean of its divisors is an integer number (42861503620).

Almost surely, 2^85723007239 is an apocalyptic number.

85723007239 is a deficient number, since it is larger than the sum of its proper divisors (1).

85723007239 is an equidigital number, since it uses as much as digits as its factorization.

85723007239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 85723007239 in words is "eighty-five billion, seven hundred twenty-three million, seven thousand, two hundred thirty-nine".