82509633331 has 4 divisors (see below), whose sum is σ = 87363141192. Its totient is φ = 77656125472.

The previous prime is 82509633313. The next prime is 82509633341. The reversal of 82509633331 is 13333690528.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82509633331 - 2⁷ = 82509633203 is a prime.

It is a super-2 number, since 2×82509633331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82509633341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2426753905 + ... + 2426753938.

It is an arithmetic number, because the mean of its divisors is an integer number (21840785298).

Almost surely, 2^82509633331 is an apocalyptic number.

82509633331 is a deficient number, since it is larger than the sum of its proper divisors (4853507861).

82509633331 is a wasteful number, since it uses less digits than its factorization.

82509633331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4853507860.

The product of its (nonzero) digits is 349920, while the sum is 43.

The spelling of 82509633331 in words is "eighty-two billion, five hundred nine million, six hundred thirty-three thousand, three hundred thirty-one".