82123594378 has 24 divisors (see below), whose sum is σ = 148238583300. Its totient is φ = 33982175808.

The previous prime is 82123594331. The next prime is 82123594439. The reversal of 82123594378 is 87349532128.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 71461586329 + 10662008049 = 267323^2 + 103257^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14445363 + ... + 14451046.

Almost surely, 2^82123594378 is an apocalyptic number.

82123594378 is a deficient number, since it is larger than the sum of its proper divisors (66114988922).

82123594378 is a wasteful number, since it uses less digits than its factorization.

82123594378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28896454 (or 28896447 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 52.

The spelling of 82123594378 in words is "eighty-two billion, one hundred twenty-three million, five hundred ninety-four thousand, three hundred seventy-eight".