82540289079 has 24 divisors (see below), whose sum is σ = 125546157360. Its totient is φ = 52111475712.

The previous prime is 82540289063. The next prime is 82540289087. The reversal of 82540289079 is 97098204528.

82540289079 is a `hidden beast` number, since 8 + 2 + 540 + 2 + 8 + 90 + 7 + 9 = 666.

It is not a de Polignac number, because 82540289079 - 2⁴ = 82540289063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82540289089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 383097 + ... + 558429.

It is an arithmetic number, because the mean of its divisors is an integer number (5231089890).

Almost surely, 2^82540289079 is an apocalyptic number.

82540289079 is a deficient number, since it is larger than the sum of its proper divisors (43005868281).

82540289079 is a wasteful number, since it uses less digits than its factorization.

82540289079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178111 (or 178108 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 82540289079 in words is "eighty-two billion, five hundred forty million, two hundred eighty-nine thousand, seventy-nine".