82072508571 has 12 divisors (see below), whose sum is σ = 118575230280. Its totient is φ = 54702982080.

The previous prime is 82072508533. The next prime is 82072508593. The reversal of 82072508571 is 17580527028.

82072508571 is a `hidden beast` number, since 8 + 2 + 0 + 72 + 5 + 0 + 8 + 571 = 666.

It is not a de Polignac number, because 82072508571 - 2²¹ = 82070411419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82072508501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 958641 + ... + 1040738.

It is an arithmetic number, because the mean of its divisors is an integer number (9881269190).

Almost surely, 2^82072508571 is an apocalyptic number.

82072508571 is a deficient number, since it is larger than the sum of its proper divisors (36502721709).

82072508571 is a wasteful number, since it uses less digits than its factorization.

82072508571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003946 (or 2003943 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 45.

The spelling of 82072508571 in words is "eighty-two billion, seventy-two million, five hundred eight thousand, five hundred seventy-one".