85623322061 has 4 divisors (see below), whose sum is σ = 85641952572. Its totient is φ = 85604691552.

The previous prime is 85623322049. The next prime is 85623322091. The reversal of 85623322061 is 16022332658.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16022332658 = 2 ⋅8011166329.

It can be written as a sum of positive squares in 2 ways, for example, as 22980740836 + 62642581225 = 151594^2 + 250285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85623322061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85623322091) 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, 9308360 + ... + 9317553.

It is an arithmetic number, because the mean of its divisors is an integer number (21410488143).

Almost surely, 2^85623322061 is an apocalyptic number.

It is an amenable number.

85623322061 is a deficient number, since it is larger than the sum of its proper divisors (18630511).

85623322061 is a wasteful number, since it uses less digits than its factorization.

85623322061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18630510.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 85623322061 in words is "eighty-five billion, six hundred twenty-three million, three hundred twenty-two thousand, sixty-one".