85457854579 has 2 divisors, whose sum is σ = 85457854580. Its totient is φ = 85457854578.

The previous prime is 85457854553. The next prime is 85457854609. The reversal of 85457854579 is 97545875458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85457854579 - 2⁷ = 85457854451 is a prime.

It is a super-2 number, since 2×85457854579² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85457854549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42728927289 + 42728927290.

It is an arithmetic number, because the mean of its divisors is an integer number (42728927290).

Almost surely, 2^85457854579 is an apocalyptic number.

85457854579 is a deficient number, since it is larger than the sum of its proper divisors (1).

85457854579 is an equidigital number, since it uses as much as digits as its factorization.

85457854579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240000, while the sum is 67.

The spelling of 85457854579 in words is "eighty-five billion, four hundred fifty-seven million, eight hundred fifty-four thousand, five hundred seventy-nine".