82636841404538 has 4 divisors (see below), whose sum is σ = 123955262106810. Its totient is φ = 41318420702268.

The previous prime is 82636841404531. The next prime is 82636841404577. The reversal of 82636841404538 is 83540414863628.

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., 82631499694969 + 5341709569 = 9090187^2 + 73087^2 .

It is not an unprimeable number, because it can be changed into a prime (82636841404531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20659210351133 + ... + 20659210351136.

Almost surely, 2^{82636841404538} is an apocalyptic number.

82636841404538 is a deficient number, since it is larger than the sum of its proper divisors (41318420702272).

82636841404538 is a wasteful number, since it uses less digits than its factorization.

82636841404538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41318420702271.

The product of its (nonzero) digits is 106168320, while the sum is 62.

The spelling of 82636841404538 in words is "eighty-two trillion, six hundred thirty-six billion, eight hundred forty-one million, four hundred four thousand, five hundred thirty-eight".