6544049137 has 2 divisors, whose sum is σ = 6544049138. Its totient is φ = 6544049136.

The previous prime is 6544049123. The next prime is 6544049153. The reversal of 6544049137 is 7319404456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6085404081 + 458645056 = 78009^2 + 21416^2 .

It is a cyclic number.

It is not a de Polignac number, because 6544049137 - 2⁷ = 6544049009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6544049093 and 6544049102.

It is not a weakly prime, because it can be changed into another prime (6544049117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3272024568 + 3272024569.

It is an arithmetic number, because the mean of its divisors is an integer number (3272024569).

Almost surely, 2^6544049137 is an apocalyptic number.

It is an amenable number.

6544049137 is a deficient number, since it is larger than the sum of its proper divisors (1).

6544049137 is an equidigital number, since it uses as much as digits as its factorization.

6544049137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 6544049137 is about 80895.2973725914. The cubic root of 6544049137 is about 1870.4618319418.

The spelling of 6544049137 in words is "six billion, five hundred forty-four million, forty-nine thousand, one hundred thirty-seven".