85899806206 has 4 divisors (see below), whose sum is σ = 128849709312. Its totient is φ = 42949903102.

The previous prime is 85899806137. The next prime is 85899806249. The reversal of 85899806206 is 60260899858.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60260899858 = 2 ⋅30130449929.

It is a super-2 number, since 2×85899806206² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21474951550 + ... + 21474951553.

It is an arithmetic number, because the mean of its divisors is an integer number (32212427328).

Almost surely, 2^85899806206 is an apocalyptic number.

85899806206 is a deficient number, since it is larger than the sum of its proper divisors (42949903106).

85899806206 is a wasteful number, since it uses less digits than its factorization.

85899806206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42949903105.

The product of its (nonzero) digits is 14929920, while the sum is 61.

The spelling of 85899806206 in words is "eighty-five billion, eight hundred ninety-nine million, eight hundred six thousand, two hundred six".