82581574198 has 16 divisors (see below), whose sum is σ = 136061176320. Its totient is φ = 37416822696.

The previous prime is 82581574147. The next prime is 82581574199. The reversal of 82581574198 is 89147518528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82581574199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47242590 + ... + 47244337.

It is an arithmetic number, because the mean of its divisors is an integer number (8503823520).

Almost surely, 2^82581574198 is an apocalyptic number.

82581574198 is a deficient number, since it is larger than the sum of its proper divisors (53479602122).

82581574198 is a wasteful number, since it uses less digits than its factorization.

82581574198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94486971.

The product of its digits is 6451200, while the sum is 58.

The spelling of 82581574198 in words is "eighty-two billion, five hundred eighty-one million, five hundred seventy-four thousand, one hundred ninety-eight".