85722222758 has 4 divisors (see below), whose sum is σ = 128583334140. Its totient is φ = 42861111378.

The previous prime is 85722222757. The next prime is 85722222767.

85722222758 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85722222757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21430555688 + ... + 21430555691.

It is an arithmetic number, because the mean of its divisors is an integer number (32145833535).

Almost surely, 2^85722222758 is an apocalyptic number.

85722222758 is a deficient number, since it is larger than the sum of its proper divisors (42861111382).

85722222758 is a wasteful number, since it uses less digits than its factorization.

85722222758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42861111381.

The product of its digits is 2508800, while the sum is 50.

The spelling of 85722222758 in words is "eighty-five billion, seven hundred twenty-two million, two hundred twenty-two thousand, seven hundred fifty-eight".