84642186373 has 2 divisors, whose sum is σ = 84642186374. Its totient is φ = 84642186372.

The previous prime is 84642186283. The next prime is 84642186437. The reversal of 84642186373 is 37368124648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80033541604 + 4608644769 = 282902^2 + 67887^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84642186373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84642186373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84642186773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42321093186 + 42321093187.

It is an arithmetic number, because the mean of its divisors is an integer number (42321093187).

Almost surely, 2^84642186373 is an apocalyptic number.

It is an amenable number.

84642186373 is a deficient number, since it is larger than the sum of its proper divisors (1).

84642186373 is an equidigital number, since it uses as much as digits as its factorization.

84642186373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 52.

The spelling of 84642186373 in words is "eighty-four billion, six hundred forty-two million, one hundred eighty-six thousand, three hundred seventy-three".