82374345421 has 2 divisors, whose sum is σ = 82374345422. Its totient is φ = 82374345420.

The previous prime is 82374345367. The next prime is 82374345451. The reversal of 82374345421 is 12454347328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44462361321 + 37911984100 = 210861^2 + 194710^2 .

It is a cyclic number.

It is not a de Polignac number, because 82374345421 - 2¹⁵ = 82374312653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82374345451) by changing a digit.

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, 41187172710 + 41187172711.

It is an arithmetic number, because the mean of its divisors is an integer number (41187172711).

Almost surely, 2^82374345421 is an apocalyptic number.

It is an amenable number.

82374345421 is a deficient number, since it is larger than the sum of its proper divisors (1).

82374345421 is an equidigital number, since it uses as much as digits as its factorization.

82374345421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 43.

The spelling of 82374345421 in words is "eighty-two billion, three hundred seventy-four million, three hundred forty-five thousand, four hundred twenty-one".