63263261563 has 32 divisors (see below), whose sum is σ = 68124672000. Its totient is φ = 58642768800.

The previous prime is 63263261543. The next prime is 63263261573. The reversal of 63263261563 is 36516236236.

It is a cyclic number.

It is not a de Polignac number, because 63263261563 - 2⁵ = 63263261531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63263261543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18832278 + ... + 18835636.

It is an arithmetic number, because the mean of its divisors is an integer number (2128896000).

Almost surely, 2^63263261563 is an apocalyptic number.

63263261563 is a deficient number, since it is larger than the sum of its proper divisors (4861410437).

63263261563 is a wasteful number, since it uses less digits than its factorization.

63263261563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703.

The product of its digits is 699840, while the sum is 43.

Adding to 63263261563 its reverse (36516236236), we get a palindrome (99779497799).

The spelling of 63263261563 in words is "sixty-three billion, two hundred sixty-three million, two hundred sixty-one thousand, five hundred sixty-three".