82540890447 has 8 divisors (see below), whose sum is σ = 110669351040. Its totient is φ = 54719845080.

The previous prime is 82540890433. The next prime is 82540890479. The reversal of 82540890447 is 74409804528.

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

It is not a de Polignac number, because 82540890447 - 2¹⁰ = 82540889423 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 82540890447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82540990447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76853179 + ... + 76854252.

It is an arithmetic number, because the mean of its divisors is an integer number (13833668880).

Almost surely, 2^82540890447 is an apocalyptic number.

82540890447 is a deficient number, since it is larger than the sum of its proper divisors (28128460593).

82540890447 is a wasteful number, since it uses less digits than its factorization.

82540890447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153707613.

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 82540890447 in words is "eighty-two billion, five hundred forty million, eight hundred ninety thousand, four hundred forty-seven".