85447074458 has 4 divisors (see below), whose sum is σ = 128170611690. Its totient is φ = 42723537228.

The previous prime is 85447074457. The next prime is 85447074487.

85447074458 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., 46934189449 + 38512885009 = 216643^2 + 196247^2 .

It is not an unprimeable number, because it can be changed into a prime (85447074451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21361768613 + ... + 21361768616.

Almost surely, 2^85447074458 is an apocalyptic number.

85447074458 is a deficient number, since it is larger than the sum of its proper divisors (42723537232).

85447074458 is a wasteful number, since it uses less digits than its factorization.

85447074458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42723537231.

The product of its (nonzero) digits is 20070400, while the sum is 56.

The spelling of 85447074458 in words is "eighty-five billion, four hundred forty-seven million, seventy-four thousand, four hundred fifty-eight".