85718223708861 has 4 divisors (see below), whose sum is σ = 114290964945152. Its totient is φ = 57145482472572.

The previous prime is 85718223708829. The next prime is 85718223708883. The reversal of 85718223708861 is 16880732281758.

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 not a de Polignac number, because 85718223708861 - 2⁵ = 85718223708829 is a prime.

It is a super-2 number, since 2×85718223708861² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85718223708792 and 85718223708801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85718223708461) 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, 14286370618141 + ... + 14286370618146.

It is an arithmetic number, because the mean of its divisors is an integer number (28572741236288).

Almost surely, 2^{85718223708861} is an apocalyptic number.

It is an amenable number.

85718223708861 is a deficient number, since it is larger than the sum of its proper divisors (28572741236291).

85718223708861 is a wasteful number, since it uses less digits than its factorization.

85718223708861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28572741236290.

The product of its (nonzero) digits is 72253440, while the sum is 66.

The spelling of 85718223708861 in words is "eighty-five trillion, seven hundred eighteen billion, two hundred twenty-three million, seven hundred eight thousand, eight hundred sixty-one".