84982178357 has 2 divisors, whose sum is σ = 84982178358. Its totient is φ = 84982178356.

The previous prime is 84982178353. The next prime is 84982178371. The reversal of 84982178357 is 75387128948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58917367441 + 26064810916 = 242729^2 + 161446^2 .

It is a cyclic number.

It is not a de Polignac number, because 84982178357 - 2² = 84982178353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84982178357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84982178353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42491089178 + 42491089179.

It is an arithmetic number, because the mean of its divisors is an integer number (42491089179).

Almost surely, 2^84982178357 is an apocalyptic number.

It is an amenable number.

84982178357 is a deficient number, since it is larger than the sum of its proper divisors (1).

84982178357 is an equidigital number, since it uses as much as digits as its factorization.

84982178357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27095040, while the sum is 62.

The spelling of 84982178357 in words is "eighty-four billion, nine hundred eighty-two million, one hundred seventy-eight thousand, three hundred fifty-seven".