82427272491 has 8 divisors (see below), whose sum is σ = 109909995840. Its totient is φ = 54948032072.

The previous prime is 82427272471. The next prime is 82427272531. The reversal of 82427272491 is 19427272428.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82427272491 - 2⁷ = 82427272363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82427272491.

It is not an unprimeable number, because it can be changed into a prime (82427272471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 815001 + ... + 910538.

It is an arithmetic number, because the mean of its divisors is an integer number (13738749480).

Almost surely, 2^82427272491 is an apocalyptic number.

82427272491 is a deficient number, since it is larger than the sum of its proper divisors (27482723349).

82427272491 is a wasteful number, since it uses less digits than its factorization.

82427272491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741465.

The product of its digits is 903168, while the sum is 48.

The spelling of 82427272491 in words is "eighty-two billion, four hundred twenty-seven million, two hundred seventy-two thousand, four hundred ninety-one".