6573449487961 has 2 divisors, whose sum is σ = 6573449487962. Its totient is φ = 6573449487960.

The previous prime is 6573449487953. The next prime is 6573449488051. The reversal of 6573449487961 is 1697849443756.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4730016019600 + 1843433468361 = 2174860^2 + 1357731^2 .

It is a cyclic number.

It is not a de Polignac number, because 6573449487961 - 2³ = 6573449487953 is a prime.

It is not a weakly prime, because it can be changed into another prime (6573449487461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3286724743980 + 3286724743981.

It is an arithmetic number, because the mean of its divisors is an integer number (3286724743981).

Almost surely, 2^{6573449487961} is an apocalyptic number.

It is an amenable number.

6573449487961 is a deficient number, since it is larger than the sum of its proper divisors (1).

6573449487961 is an equidigital number, since it uses as much as digits as its factorization.

6573449487961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1097349120, while the sum is 73.

The spelling of 6573449487961 in words is "six trillion, five hundred seventy-three billion, four hundred forty-nine million, four hundred eighty-seven thousand, nine hundred sixty-one".