71855443144082 has 64 divisors (see below), whose sum is σ = 119273386589280. Its totient is φ = 32255096832000.

The previous prime is 71855443144073. The next prime is 71855443144129. The reversal of 71855443144082 is 28044134455817.

It is a Cunningham number, because it is equal to 8476759²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 20619781891801 + 51235661252281 = 4540901^2 + 7157909^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 723650294 + ... + 723749582.

Almost surely, 2^{71855443144082} is an apocalyptic number.

71855443144082 is a deficient number, since it is larger than the sum of its proper divisors (47417943445198).

71855443144082 is a wasteful number, since it uses less digits than its factorization.

71855443144082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101439.

The product of its (nonzero) digits is 17203200, while the sum is 56.

Adding to 71855443144082 its reverse (28044134455817), we get a palindrome (99899577599899).

The spelling of 71855443144082 in words is "seventy-one trillion, eight hundred fifty-five billion, four hundred forty-three million, one hundred forty-four thousand, eighty-two".