6534990443 has 2 divisors, whose sum is σ = 6534990444. Its totient is φ = 6534990442.

The previous prime is 6534990421. The next prime is 6534990467. The reversal of 6534990443 is 3440994356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6534990443 - 2⁶ = 6534990379 is a prime.

It is a super-2 number, since 2×6534990443² = 85412200180202672498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6534990493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3267495221 + 3267495222.

It is an arithmetic number, because the mean of its divisors is an integer number (3267495222).

Almost surely, 2^6534990443 is an apocalyptic number.

6534990443 is a deficient number, since it is larger than the sum of its proper divisors (1).

6534990443 is an equidigital number, since it uses as much as digits as its factorization.

6534990443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 47.

The square root of 6534990443 is about 80839.2877442645. The cubic root of 6534990443 is about 1869.5983621779.

The spelling of 6534990443 in words is "six billion, five hundred thirty-four million, nine hundred ninety thousand, four hundred forty-three".