82568761387 has 24 divisors (see below), whose sum is σ = 96456041136. Its totient is φ = 70474154688.

The previous prime is 82568761351. The next prime is 82568761397. The reversal of 82568761387 is 78316786528.

It is a de Polignac number, because none of the positive numbers 2^k-82568761387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82568761397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14500713 + ... + 14506405.

It is an arithmetic number, because the mean of its divisors is an integer number (4019001714).

Almost surely, 2^82568761387 is an apocalyptic number.

82568761387 is a deficient number, since it is larger than the sum of its proper divisors (13887279749).

82568761387 is a wasteful number, since it uses less digits than its factorization.

82568761387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6907 (or 6900 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 61.

The spelling of 82568761387 in words is "eighty-two billion, five hundred sixty-eight million, seven hundred sixty-one thousand, three hundred eighty-seven".