82844039378 has 4 divisors (see below), whose sum is σ = 124266059070. Its totient is φ = 41422019688.

The previous prime is 82844039353. The next prime is 82844039401. The reversal of 82844039378 is 87393044828.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 49547643649 + 33296395729 = 222593^2 + 182473^2 .

It is a super-2 number, since 2×82844039378² (a number of 23 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 20711009843 + ... + 20711009846.

Almost surely, 2^82844039378 is an apocalyptic number.

82844039378 is a deficient number, since it is larger than the sum of its proper divisors (41422019692).

82844039378 is a wasteful number, since it uses less digits than its factorization.

82844039378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41422019691.

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 82844039378 in words is "eighty-two billion, eight hundred forty-four million, thirty-nine thousand, three hundred seventy-eight".