58284971821 has 2 divisors, whose sum is σ = 58284971822. Its totient is φ = 58284971820.

The previous prime is 58284971809. The next prime is 58284971837. The reversal of 58284971821 is 12817948285.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37839975625 + 20444996196 = 194525^2 + 142986^2 .

It is a cyclic number.

It is not a de Polignac number, because 58284971821 - 2⁹ = 58284971309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (58284971621) 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, 29142485910 + 29142485911.

It is an arithmetic number, because the mean of its divisors is an integer number (29142485911).

Almost surely, 2^58284971821 is an apocalyptic number.

It is an amenable number.

58284971821 is a deficient number, since it is larger than the sum of its proper divisors (1).

58284971821 is an equidigital number, since it uses as much as digits as its factorization.

58284971821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2580480, while the sum is 55.

The spelling of 58284971821 in words is "fifty-eight billion, two hundred eighty-four million, nine hundred seventy-one thousand, eight hundred twenty-one".