500058016856821 has 2 divisors, whose sum is σ = 500058016856822. Its totient is φ = 500058016856820.

The previous prime is 500058016856773. The next prime is 500058016856833. The reversal of 500058016856821 is 128658610850005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 387349239816100 + 112708777040721 = 19681190^2 + 10616439^2 .

It is a cyclic number.

It is not a de Polignac number, because 500058016856821 - 2¹³ = 500058016848629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500058016856921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250029008428410 + 250029008428411.

It is an arithmetic number, because the mean of its divisors is an integer number (250029008428411).

Almost surely, 2^{500058016856821} is an apocalyptic number.

It is an amenable number.

500058016856821 is a deficient number, since it is larger than the sum of its proper divisors (1).

500058016856821 is an equidigital number, since it uses as much as digits as its factorization.

500058016856821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608000, while the sum is 55.

The spelling of 500058016856821 in words is "five hundred trillion, fifty-eight billion, sixteen million, eight hundred fifty-six thousand, eight hundred twenty-one".