85254191369 has 4 divisors (see below), whose sum is σ = 85826367300. Its totient is φ = 84682015440.

The previous prime is 85254191353. The next prime is 85254191411. The reversal of 85254191369 is 96319145258.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12455676025 + 72798515344 = 111605^2 + 269812^2 .

It is a cyclic number.

It is not a de Polignac number, because 85254191369 - 2⁴ = 85254191353 is a prime.

It is a super-2 number, since 2×85254191369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85254191369.

It is not an unprimeable number, because it can be changed into a prime (85254199369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286087742 + ... + 286088039.

It is an arithmetic number, because the mean of its divisors is an integer number (21456591825).

Almost surely, 2^85254191369 is an apocalyptic number.

It is an amenable number.

85254191369 is a deficient number, since it is larger than the sum of its proper divisors (572175931).

85254191369 is a wasteful number, since it uses less digits than its factorization.

85254191369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572175930.

The product of its digits is 2332800, while the sum is 53.

The spelling of 85254191369 in words is "eighty-five billion, two hundred fifty-four million, one hundred ninety-one thousand, three hundred sixty-nine".