85723239669 has 8 divisors (see below), whose sum is σ = 114385782720. Its totient is φ = 57104761536.

The previous prime is 85723239631. The next prime is 85723239673. The reversal of 85723239669 is 96693232758.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85723239669 - 2¹⁵ = 85723206901 is a prime.

It is a super-2 number, since 2×85723239669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85723231669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11011689 + ... + 11019470.

It is an arithmetic number, because the mean of its divisors is an integer number (14298222840).

Almost surely, 2^85723239669 is an apocalyptic number.

It is an amenable number.

85723239669 is a deficient number, since it is larger than the sum of its proper divisors (28662543051).

85723239669 is a wasteful number, since it uses less digits than its factorization.

85723239669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22032459.

The product of its digits is 29393280, while the sum is 60.

The spelling of 85723239669 in words is "eighty-five billion, seven hundred twenty-three million, two hundred thirty-nine thousand, six hundred sixty-nine".