85626791539 has 2 divisors, whose sum is σ = 85626791540. Its totient is φ = 85626791538.

The previous prime is 85626791491. The next prime is 85626791543. The reversal of 85626791539 is 93519762658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85626791539 - 2¹¹ = 85626789491 is a prime.

It is not a weakly prime, because it can be changed into another prime (85626791039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42813395769 + 42813395770.

It is an arithmetic number, because the mean of its divisors is an integer number (42813395770).

Almost surely, 2^85626791539 is an apocalyptic number.

85626791539 is a deficient number, since it is larger than the sum of its proper divisors (1).

85626791539 is an equidigital number, since it uses as much as digits as its factorization.

85626791539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24494400, while the sum is 61.

The spelling of 85626791539 in words is "eighty-five billion, six hundred twenty-six million, seven hundred ninety-one thousand, five hundred thirty-nine".