85809671522 has 8 divisors (see below), whose sum is σ = 130635619536. Its totient is φ = 42264465012.

The previous prime is 85809671503. The next prime is 85809671527. The reversal of 85809671522 is 22517690858.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (85809671527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320185208 + ... + 320185475.

It is an arithmetic number, because the mean of its divisors is an integer number (16329452442).

Almost surely, 2^85809671522 is an apocalyptic number.

85809671522 is a deficient number, since it is larger than the sum of its proper divisors (44825948014).

85809671522 is a wasteful number, since it uses less digits than its factorization.

85809671522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640370752.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 85809671522 in words is "eighty-five billion, eight hundred nine million, six hundred seventy-one thousand, five hundred twenty-two".