82909389305 has 8 divisors (see below), whose sum is σ = 99582299592. Its totient is φ = 66266823168.

The previous prime is 82909389293. The next prime is 82909389313. The reversal of 82909389305 is 50398390928.

It can be written as a sum of positive squares in 4 ways, for example, as 58034737216 + 24874652089 = 240904^2 + 157717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82909389305 - 2⁸ = 82909389049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7580024 + ... + 7590953.

It is an arithmetic number, because the mean of its divisors is an integer number (12447787449).

Almost surely, 2^82909389305 is an apocalyptic number.

It is an amenable number.

82909389305 is a deficient number, since it is larger than the sum of its proper divisors (16672910287).

82909389305 is a wasteful number, since it uses less digits than its factorization.

82909389305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15172075.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The spelling of 82909389305 in words is "eighty-two billion, nine hundred nine million, three hundred eighty-nine thousand, three hundred five".