6253638563 has 16 divisors (see below), whose sum is σ = 6392805120. Its totient is φ = 6116015136.

The previous prime is 6253638553. The next prime is 6253638571. The reversal of 6253638563 is 3658363526.

6253638563 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6253638563 - 2¹⁰ = 6253637539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6253638553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8416370 + ... + 8417112.

It is an arithmetic number, because the mean of its divisors is an integer number (399550320).

Almost surely, 2^6253638563 is an apocalyptic number.

6253638563 is a deficient number, since it is larger than the sum of its proper divisors (139166557).

6253638563 is a wasteful number, since it uses less digits than its factorization.

6253638563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546.

The product of its digits is 2332800, while the sum is 47.

The square root of 6253638563 is about 79079.9504488970. The cubic root of 6253638563 is about 1842.3731354614.

The spelling of 6253638563 in words is "six billion, two hundred fifty-three million, six hundred thirty-eight thousand, five hundred sixty-three".