6496849502021 has 2 divisors, whose sum is σ = 6496849502022. Its totient is φ = 6496849502020.

The previous prime is 6496849501993. The next prime is 6496849502089. The reversal of 6496849502021 is 1202059486946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6180121420225 + 316728081796 = 2485985^2 + 562786^2 .

It is a cyclic number.

It is not a de Polignac number, because 6496849502021 - 2⁴² = 2098802990917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6496849502321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3248424751010 + 3248424751011.

It is an arithmetic number, because the mean of its divisors is an integer number (3248424751011).

Almost surely, 2^{6496849502021} is an apocalyptic number.

It is an amenable number.

6496849502021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6496849502021 is an equidigital number, since it uses as much as digits as its factorization.

6496849502021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7464960, while the sum is 56.

The spelling of 6496849502021 in words is "six trillion, four hundred ninety-six billion, eight hundred forty-nine million, five hundred two thousand, twenty-one".