82472081831 has 4 divisors (see below), whose sum is σ = 84483596064. Its totient is φ = 80460567600.

The previous prime is 82472081779. The next prime is 82472081843. The reversal of 82472081831 is 13818027428.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82472081831 - 2¹⁴ = 82472065447 is a prime.

It is a super-2 number, since 2×82472081831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82472081851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005757055 + ... + 1005757136.

It is an arithmetic number, because the mean of its divisors is an integer number (21120899016).

Almost surely, 2^82472081831 is an apocalyptic number.

82472081831 is a deficient number, since it is larger than the sum of its proper divisors (2011514233).

82472081831 is a wasteful number, since it uses less digits than its factorization.

82472081831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011514232.

The product of its (nonzero) digits is 172032, while the sum is 44.

The spelling of 82472081831 in words is "eighty-two billion, four hundred seventy-two million, eighty-one thousand, eight hundred thirty-one".