6573449487953 has 2 divisors, whose sum is σ = 6573449487954. Its totient is φ = 6573449487952.

The previous prime is 6573449487919. The next prime is 6573449487961. The reversal of 6573449487953 is 3597849443756.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5827941576769 + 745507911184 = 2414113^2 + 863428^2 .

It is a cyclic number.

It is not a de Polignac number, because 6573449487953 - 2¹⁸ = 6573449225809 is a prime.

It is not a weakly prime, because it can be changed into another prime (6573449481953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3286724743976 + 3286724743977.

It is an arithmetic number, because the mean of its divisors is an integer number (3286724743977).

Almost surely, 2^{6573449487953} is an apocalyptic number.

It is an amenable number.

6573449487953 is a deficient number, since it is larger than the sum of its proper divisors (1).

6573449487953 is an equidigital number, since it uses as much as digits as its factorization.

6573449487953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2743372800, while the sum is 74.

The spelling of 6573449487953 in words is "six trillion, five hundred seventy-three billion, four hundred forty-nine million, four hundred eighty-seven thousand, nine hundred fifty-three".