6563551935249 has 9 divisors (see below), whose sum is σ = 9480697230459. Its totient is φ = 4375696166280.

The previous prime is 6563551935229. The next prime is 6563551935263. The reversal of 6563551935249 is 9425391553656.

The square root of 6563551935249 is 2561943.

It is a perfect power (a square), and thus also a powerful number.

6563551935249 is a `hidden beast` number, since 6 + 5 + 6 + 3 + 551 + 9 + 35 + 2 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4568508683649 + 1995043251600 = 2137407^2 + 1412460^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 6563551935249 - 2¹⁷ = 6563551804177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6563551935229) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7258839 + ... + 8112819.

Almost surely, 2^{6563551935249} is an apocalyptic number.

6563551935249 is the 2561943-rd square number.

6563551935249 is the 1280972-nd centered octagonal number.

It is an amenable number.

6563551935249 is a deficient number, since it is larger than the sum of its proper divisors (2917145295210).

6563551935249 is an frugal number, since it uses more digits than its factorization.

6563551935249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707968 (or 853984 counting only the distinct ones).

The product of its digits is 131220000, while the sum is 63.

The spelling of 6563551935249 in words is "six trillion, five hundred sixty-three billion, five hundred fifty-one million, nine hundred thirty-five thousand, two hundred forty-nine".