85111006081 has 4 divisors (see below), whose sum is σ = 85620652992. Its totient is φ = 84601359172.

The previous prime is 85111006061. The next prime is 85111006087. The reversal of 85111006081 is 18060011158.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85111006081 - 2⁵ = 85111006049 is a prime.

It is a super-2 number, since 2×85111006081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85111006087) 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, 254823205 + ... + 254823538.

It is an arithmetic number, because the mean of its divisors is an integer number (21405163248).

Almost surely, 2^85111006081 is an apocalyptic number.

It is an amenable number.

85111006081 is a deficient number, since it is larger than the sum of its proper divisors (509646911).

85111006081 is a wasteful number, since it uses less digits than its factorization.

85111006081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509646910.

The product of its (nonzero) digits is 1920, while the sum is 31.

The spelling of 85111006081 in words is "eighty-five billion, one hundred eleven million, six thousand, eighty-one".