799902210421 has 2 divisors, whose sum is σ = 799902210422. Its totient is φ = 799902210420.

The previous prime is 799902210391. The next prime is 799902210463. The reversal of 799902210421 is 124012209997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 774417600100 + 25484610321 = 880010^2 + 159639^2 .

It is a cyclic number.

It is not a de Polignac number, because 799902210421 - 2¹⁷ = 799902079349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (799902219421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399951105210 + 399951105211.

It is an arithmetic number, because the mean of its divisors is an integer number (399951105211).

Almost surely, 2^799902210421 is an apocalyptic number.

It is an amenable number.

799902210421 is a deficient number, since it is larger than the sum of its proper divisors (1).

799902210421 is an equidigital number, since it uses as much as digits as its factorization.

799902210421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 799902210421 in words is "seven hundred ninety-nine billion, nine hundred two million, two hundred ten thousand, four hundred twenty-one".