63805000033 has 8 divisors (see below), whose sum is σ = 65379744360. Its totient is φ = 62231137920.

The previous prime is 63805000013. The next prime is 63805000087. The reversal of 63805000033 is 33000050836.

It can be written as a sum of positive squares in 4 ways, for example, as 211760704 + 63593239329 = 14552^2 + 252177^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63805000033 - 2¹³ = 63804991841 is a prime.

It is a super-2 number, since 2×63805000033² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63804999965 and 63805000010.

It is not an unprimeable number, because it can be changed into a prime (63805000013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72918 + ... + 364591.

It is an arithmetic number, because the mean of its divisors is an integer number (8172468045).

Almost surely, 2^63805000033 is an apocalyptic number.

63805000033 is the 145837-th octagonal number.

It is an amenable number.

63805000033 is a deficient number, since it is larger than the sum of its proper divisors (1574744327).

63805000033 is a wasteful number, since it uses less digits than its factorization.

63805000033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441107.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 63805000033 its reverse (33000050836), we get a palindrome (96805050869).

The spelling of 63805000033 in words is "sixty-three billion, eight hundred five million, thirty-three", and thus it is an aban number.