85789373731 has 4 divisors (see below), whose sum is σ = 85968475200. Its totient is φ = 85610272264.

The previous prime is 85789373729. The next prime is 85789373753. The reversal of 85789373731 is 13737398758.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85789373731 - 2¹ = 85789373729 is a prime.

It is a super-2 number, since 2×85789373731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85789373731.

It is not an unprimeable number, because it can be changed into a prime (85789373231) 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, 89550016 + ... + 89550973.

It is an arithmetic number, because the mean of its divisors is an integer number (21492118800).

Almost surely, 2^85789373731 is an apocalyptic number.

85789373731 is a deficient number, since it is larger than the sum of its proper divisors (179101469).

85789373731 is a wasteful number, since it uses less digits than its factorization.

85789373731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179101468.

The product of its digits is 26671680, while the sum is 61.

The spelling of 85789373731 in words is "eighty-five billion, seven hundred eighty-nine million, three hundred seventy-three thousand, seven hundred thirty-one".