82564371394 has 16 divisors (see below), whose sum is σ = 129296046528. Its totient is φ = 39467490832.

The previous prime is 82564371377. The next prime is 82564371431. The reversal of 82564371394 is 49317346528.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357532 + ... + 541255.

It is an arithmetic number, because the mean of its divisors is an integer number (8081002908).

Almost surely, 2^82564371394 is an apocalyptic number.

82564371394 is a deficient number, since it is larger than the sum of its proper divisors (46731675134).

82564371394 is a wasteful number, since it uses less digits than its factorization.

82564371394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900809.

The product of its digits is 4354560, while the sum is 52.

The spelling of 82564371394 in words is "eighty-two billion, five hundred sixty-four million, three hundred seventy-one thousand, three hundred ninety-four".