82571217157 has 16 divisors (see below), whose sum is σ = 102713026752. Its totient is φ = 65214616320.

The previous prime is 82571217151. The next prime is 82571217217. The reversal of 82571217157 is 75171217528.

It is a cyclic number.

It is not a de Polignac number, because 82571217157 - 2¹⁵ = 82571184389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82571217151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16980543 + ... + 16985404.

It is an arithmetic number, because the mean of its divisors is an integer number (6419564172).

Almost surely, 2^82571217157 is an apocalyptic number.

It is an amenable number.

82571217157 is a deficient number, since it is larger than the sum of its proper divisors (20141809595).

82571217157 is a wasteful number, since it uses less digits than its factorization.

82571217157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33965988.

The product of its digits is 274400, while the sum is 46.

The spelling of 82571217157 in words is "eighty-two billion, five hundred seventy-one million, two hundred seventeen thousand, one hundred fifty-seven".