82617126643 has 4 divisors (see below), whose sum is σ = 87476957640. Its totient is φ = 77757295648.

The previous prime is 82617126623. The next prime is 82617126667. The reversal of 82617126643 is 34662171628.

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 82617126643 - 2³³ = 74027192051 is a prime.

It is a super-2 number, since 2×82617126643² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82617126593 and 82617126602.

It is not an unprimeable number, because it can be changed into a prime (82617126623) 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, 2429915473 + ... + 2429915506.

It is an arithmetic number, because the mean of its divisors is an integer number (21869239410).

Almost surely, 2^82617126643 is an apocalyptic number.

82617126643 is a deficient number, since it is larger than the sum of its proper divisors (4859830997).

82617126643 is a wasteful number, since it uses less digits than its factorization.

82617126643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4859830996.

The product of its digits is 580608, while the sum is 46.

The spelling of 82617126643 in words is "eighty-two billion, six hundred seventeen million, one hundred twenty-six thousand, six hundred forty-three".