85809722469 has 16 divisors (see below), whose sum is σ = 114585879552. Its totient is φ = 57120090048.

The previous prime is 85809722437. The next prime is 85809722483. The reversal of 85809722469 is 96422790858.

It is not a de Polignac number, because 85809722469 - 2⁵ = 85809722437 is a prime.

It is a super-2 number, since 2×85809722469² (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 (85809722489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6296707 + ... + 6310319.

It is an arithmetic number, because the mean of its divisors is an integer number (7161617472).

Almost surely, 2^85809722469 is an apocalyptic number.

It is an amenable number.

85809722469 is a deficient number, since it is larger than the sum of its proper divisors (28776157083).

85809722469 is a wasteful number, since it uses less digits than its factorization.

85809722469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16636.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 85809722469 in words is "eighty-five billion, eight hundred nine million, seven hundred twenty-two thousand, four hundred sixty-nine".