82871212319 has 32 divisors (see below), whose sum is σ = 100083072000. Its totient is φ = 68509173600.

The previous prime is 82871212289. The next prime is 82871212343. The reversal of 82871212319 is 91321217828.

It is a de Polignac number, because none of the positive numbers 2^k-82871212319 is a prime.

It is a super-2 number, since 2×82871212319² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82871212319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82871212379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10450334 + ... + 10458260.

It is an arithmetic number, because the mean of its divisors is an integer number (3127596000).

Almost surely, 2^82871212319 is an apocalyptic number.

82871212319 is a deficient number, since it is larger than the sum of its proper divisors (17211859681).

82871212319 is a wasteful number, since it uses less digits than its factorization.

82871212319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9028 (or 9014 counting only the distinct ones).

The product of its digits is 96768, while the sum is 44.

The spelling of 82871212319 in words is "eighty-two billion, eight hundred seventy-one million, two hundred twelve thousand, three hundred nineteen".