85718299861 has 32 divisors (see below), whose sum is σ = 92740902912. Its totient is φ = 78939463680.

The previous prime is 85718299817. The next prime is 85718299967. The reversal of 85718299861 is 16899281758.

It is a cyclic number.

It is not a de Polignac number, because 85718299861 - 2¹¹ = 85718297813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85718299793 and 85718299802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85718293861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83140416 + ... + 83141446.

It is an arithmetic number, because the mean of its divisors is an integer number (2898153216).

Almost surely, 2^85718299861 is an apocalyptic number.

It is an amenable number.

85718299861 is a deficient number, since it is larger than the sum of its proper divisors (7022603051).

85718299861 is a wasteful number, since it uses less digits than its factorization.

85718299861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669.

The product of its digits is 17418240, while the sum is 64.

The spelling of 85718299861 in words is "eighty-five billion, seven hundred eighteen million, two hundred ninety-nine thousand, eight hundred sixty-one".