820082490427 has 2 divisors, whose sum is σ = 820082490428. Its totient is φ = 820082490426.

The previous prime is 820082490407. The next prime is 820082490431. The reversal of 820082490427 is 724094280028.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 820082490427 - 2⁷ = 820082490299 is a prime.

It is a super-2 number, since 2×820082490427² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (820082490407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410041245213 + 410041245214.

It is an arithmetic number, because the mean of its divisors is an integer number (410041245214).

Almost surely, 2^820082490427 is an apocalyptic number.

820082490427 is a deficient number, since it is larger than the sum of its proper divisors (1).

820082490427 is an equidigital number, since it uses as much as digits as its factorization.

820082490427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 820082490427 in words is "eight hundred twenty billion, eighty-two million, four hundred ninety thousand, four hundred twenty-seven".