85728722943 has 4 divisors (see below), whose sum is σ = 114304963928. Its totient is φ = 57152481960.

The previous prime is 85728722909. The next prime is 85728722999. The reversal of 85728722943 is 34922782758.

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

It is not a de Polignac number, because 85728722943 - 2¹⁴ = 85728706559 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 (85728722843) 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, 14288120488 + ... + 14288120493.

It is an arithmetic number, because the mean of its divisors is an integer number (28576240982).

Almost surely, 2^85728722943 is an apocalyptic number.

85728722943 is a deficient number, since it is larger than the sum of its proper divisors (28576240985).

85728722943 is a wasteful number, since it uses less digits than its factorization.

85728722943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28576240984.

The product of its digits is 13547520, while the sum is 57.

The spelling of 85728722943 in words is "eighty-five billion, seven hundred twenty-eight million, seven hundred twenty-two thousand, nine hundred forty-three".