85449894458 has 4 divisors (see below), whose sum is σ = 128174841690. Its totient is φ = 42724947228.

The previous prime is 85449894449. The next prime is 85449894463.

85449894458 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in only one way, i.e., 80325195889 + 5124698569 = 283417^2 + 71587^2 .

It is a super-2 number, since 2×85449894458² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21362473613 + ... + 21362473616.

Almost surely, 2^85449894458 is an apocalyptic number.

85449894458 is a deficient number, since it is larger than the sum of its proper divisors (42724947232).

85449894458 is a wasteful number, since it uses less digits than its factorization.

85449894458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42724947231.

The product of its digits is 265420800, while the sum is 68.

The spelling of 85449894458 in words is "eighty-five billion, four hundred forty-nine million, eight hundred ninety-four thousand, four hundred fifty-eight".