82506099321 has 24 divisors (see below), whose sum is σ = 120038911616. Its totient is φ = 54606998880.

The previous prime is 82506099311. The next prime is 82506099323. The reversal of 82506099321 is 12399060528.

82506099321 is a `hidden beast` number, since 8 + 2 + 5 + 0 + 609 + 9 + 32 + 1 = 666.

It is not a de Polignac number, because 82506099321 - 2⁶ = 82506099257 is a prime.

It is a super-2 number, since 2×82506099321² (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 (82506099323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 630471 + ... + 750003.

Almost surely, 2^82506099321 is an apocalyptic number.

It is an amenable number.

82506099321 is a deficient number, since it is larger than the sum of its proper divisors (37532812295).

82506099321 is a wasteful number, since it uses less digits than its factorization.

82506099321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120093 (or 120090 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 82506099321 in words is "eighty-two billion, five hundred six million, ninety-nine thousand, three hundred twenty-one".