63726963365 has 16 divisors (see below), whose sum is σ = 82372994928. Its totient is φ = 47049540096.

The previous prime is 63726963341. The next prime is 63726963367. The reversal of 63726963365 is 56336962736.

It is a Cunningham number, because it is equal to 252442²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 16425498244 + 47301465121 = 128162^2 + 217489^2 .

It is not a de Polignac number, because 63726963365 - 2⁶ = 63726963301 is a prime.

It is a super-2 number, since 2×63726963365² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63726963365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63726963367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195689 + ... + 407121.

It is an arithmetic number, because the mean of its divisors is an integer number (5148312183).

Almost surely, 2^63726963365 is an apocalyptic number.

63726963365 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

63726963365 is a deficient number, since it is larger than the sum of its proper divisors (18646031563).

63726963365 is a wasteful number, since it uses less digits than its factorization.

63726963365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216088.

The product of its digits is 22044960, while the sum is 56.

The spelling of 63726963365 in words is "sixty-three billion, seven hundred twenty-six million, nine hundred sixty-three thousand, three hundred sixty-five".