36644644644663 has 32 divisors (see below), whose sum is σ = 56437254351360. Its totient is φ = 20902255400960.

The previous prime is 36644644644661. The next prime is 36644644644677.

36644644644663 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 36644644644663 - 2¹ = 36644644644661 is a prime.

It is a super-2 number, since 2×36644644644663² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 36644644644594 and 36644644644603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36644644644661) 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, 65543206 + ... + 66099932.

It is an arithmetic number, because the mean of its divisors is an integer number (1763664198480).

Almost surely, 2^{36644644644663} is an apocalyptic number.

36644644644663 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

36644644644663 is a deficient number, since it is larger than the sum of its proper divisors (19792609706697).

36644644644663 is a wasteful number, since it uses less digits than its factorization.

36644644644663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674087.

The product of its digits is 1719926784, while the sum is 66.

The spelling of 36644644644663 in words is "thirty-six trillion, six hundred forty-four billion, six hundred forty-four million, six hundred forty-four thousand, six hundred sixty-three".