82208667971 has 4 divisors (see below), whose sum is σ = 82209420000. Its totient is φ = 82207915944.

The previous prime is 82208667929. The next prime is 82208668007. The reversal of 82208667971 is 17976680228.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 82208667971 - 2¹⁴ = 82208651587 is a prime.

It is a super-2 number, since 2×82208667971² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82208667911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176891 + ... + 442388.

It is an arithmetic number, because the mean of its divisors is an integer number (20552355000).

Almost surely, 2^82208667971 is an apocalyptic number.

82208667971 is a deficient number, since it is larger than the sum of its proper divisors (752029).

82208667971 is a wasteful number, since it uses less digits than its factorization.

82208667971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752028.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The spelling of 82208667971 in words is "eighty-two billion, two hundred eight million, six hundred sixty-seven thousand, nine hundred seventy-one".