82477862197 has 4 divisors (see below), whose sum is σ = 83294474796. Its totient is φ = 81661249600.

The previous prime is 82477862149. The next prime is 82477862213. The reversal of 82477862197 is 79126877428.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34705454436 + 47772407761 = 186294^2 + 218569^2 .

It is a cyclic number.

It is not a de Polignac number, because 82477862197 - 2¹¹ = 82477860149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82477866197) 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, 408306148 + ... + 408306349.

It is an arithmetic number, because the mean of its divisors is an integer number (20823618699).

Almost surely, 2^82477862197 is an apocalyptic number.

It is an amenable number.

82477862197 is a deficient number, since it is larger than the sum of its proper divisors (816612599).

82477862197 is a wasteful number, since it uses less digits than its factorization.

82477862197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816612598.

The product of its digits is 18966528, while the sum is 61.

The spelling of 82477862197 in words is "eighty-two billion, four hundred seventy-seven million, eight hundred sixty-two thousand, one hundred ninety-seven".