85357372869 has 48 divisors (see below), whose sum is σ = 127474611264. Its totient is φ = 55005350400.

The previous prime is 85357372823. The next prime is 85357372883. The reversal of 85357372869 is 96827375358.

85357372869 is a `hidden beast` number, since 8 + 53 + 573 + 7 + 2 + 8 + 6 + 9 = 666.

It is not a de Polignac number, because 85357372869 - 2¹² = 85357368773 is a prime.

It is a super-2 number, since 2×85357372869² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85357372069) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20124589 + ... + 20128829.

It is an arithmetic number, because the mean of its divisors is an integer number (2655721068).

Almost surely, 2^85357372869 is an apocalyptic number.

It is an amenable number.

85357372869 is a deficient number, since it is larger than the sum of its proper divisors (42117238395).

85357372869 is a wasteful number, since it uses less digits than its factorization.

85357372869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4818 (or 4815 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 63.

The spelling of 85357372869 in words is "eighty-five billion, three hundred fifty-seven million, three hundred seventy-two thousand, eight hundred sixty-nine".