82745192845 has 24 divisors (see below), whose sum is σ = 122299983864. Its totient is φ = 53401936896.

The previous prime is 82745192801. The next prime is 82745192851. The reversal of 82745192845 is 54829154728.

It can be written as a sum of positive squares in 4 ways, for example, as 6482504196 + 76262688649 = 80514^2 + 276157^2 .

It is a de Polignac number, because none of the positive numbers 2^k-82745192845 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9929232 + ... + 9937561.

It is an arithmetic number, because the mean of its divisors is an integer number (5095832661).

Almost surely, 2^82745192845 is an apocalyptic number.

82745192845 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

82745192845 is a deficient number, since it is larger than the sum of its proper divisors (39554791019).

82745192845 is a wasteful number, since it uses less digits than its factorization.

82745192845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19866829 (or 19866822 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 55.

The spelling of 82745192845 in words is "eighty-two billion, seven hundred forty-five million, one hundred ninety-two thousand, eight hundred forty-five".