82517720547 has 8 divisors (see below), whose sum is σ = 111888434880. Its totient is φ = 54079409960.

The previous prime is 82517720521. The next prime is 82517720567. The reversal of 82517720547 is 74502771528.

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 82517720547 - 2⁸ = 82517720291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82517720496 and 82517720505.

It is not an unprimeable number, because it can be changed into a prime (82517720567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233100729 + ... + 233101082.

It is an arithmetic number, because the mean of its divisors is an integer number (13986054360).

Almost surely, 2^82517720547 is an apocalyptic number.

82517720547 is a deficient number, since it is larger than the sum of its proper divisors (29370714333).

82517720547 is a wasteful number, since it uses less digits than its factorization.

82517720547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466201873.

The product of its (nonzero) digits is 1097600, while the sum is 48.

The spelling of 82517720547 in words is "eighty-two billion, five hundred seventeen million, seven hundred twenty thousand, five hundred forty-seven".