82507945849 has 16 divisors (see below), whose sum is σ = 97778142720. Its totient is φ = 68120176320.

The previous prime is 82507945789. The next prime is 82507945867. The reversal of 82507945849 is 94854970528.

It is not a de Polignac number, because 82507945849 - 2¹⁷ = 82507814777 is a prime.

It is a super-2 number, since 2×82507945849² (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 (82507945049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397249 + ... + 568174.

It is an arithmetic number, because the mean of its divisors is an integer number (6111133920).

Almost surely, 2^82507945849 is an apocalyptic number.

It is an amenable number.

82507945849 is a deficient number, since it is larger than the sum of its proper divisors (15270196871).

82507945849 is a wasteful number, since it uses less digits than its factorization.

82507945849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965880.

The product of its (nonzero) digits is 29030400, while the sum is 61.

The spelling of 82507945849 in words is "eighty-two billion, five hundred seven million, nine hundred forty-five thousand, eight hundred forty-nine".