82445566287 has 16 divisors (see below), whose sum is σ = 127352318720. Its totient is φ = 46466384832.

The previous prime is 82445566271. The next prime is 82445566351. The reversal of 82445566287 is 78266554428.

It is not a de Polignac number, because 82445566287 - 2⁴ = 82445566271 is a prime.

It is a super-2 number, since 2×82445566287² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82445566267) 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, 26888737 + ... + 26891802.

It is an arithmetic number, because the mean of its divisors is an integer number (7959519920).

Almost surely, 2^82445566287 is an apocalyptic number.

82445566287 is a deficient number, since it is larger than the sum of its proper divisors (44906752433).

82445566287 is a wasteful number, since it uses less digits than its factorization.

82445566287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53780622.

The product of its digits is 25804800, while the sum is 57.

The spelling of 82445566287 in words is "eighty-two billion, four hundred forty-five million, five hundred sixty-six thousand, two hundred eighty-seven".