85447674458 has 4 divisors (see below), whose sum is σ = 128171511690. Its totient is φ = 42723837228.

The previous prime is 85447674391. The next prime is 85447674523.

It is a happy number.

85447674458 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., 56388676369 + 29058998089 = 237463^2 + 170467^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 85447674458.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21361918613 + ... + 21361918616.

Almost surely, 2^85447674458 is an apocalyptic number.

85447674458 is a deficient number, since it is larger than the sum of its proper divisors (42723837232).

85447674458 is a wasteful number, since it uses less digits than its factorization.

85447674458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42723837231.

The product of its digits is 120422400, while the sum is 62.

The spelling of 85447674458 in words is "eighty-five billion, four hundred forty-seven million, six hundred seventy-four thousand, four hundred fifty-eight".