3638864688363 has 12 divisors (see below), whose sum is σ = 5256313402080. Its totient is φ = 2425828783536.

The previous prime is 3638864688331. The next prime is 3638864688367.

3638864688363 is a `hidden beast` number, since 3 + 6 + 3 + 8 + 86 + 468 + 83 + 6 + 3 = 666.

3638864688363 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 3638864688363 - 2⁵ = 3638864688331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3638864688291 and 3638864688300.

It is not an unprimeable number, because it can be changed into a prime (3638864688367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6465603 + ... + 7005836.

It is an arithmetic number, because the mean of its divisors is an integer number (438026116840).

Almost surely, 2^{3638864688363} is an apocalyptic number.

3638864688363 is a deficient number, since it is larger than the sum of its proper divisors (1617448713717).

3638864688363 is a wasteful number, since it uses less digits than its factorization.

3638864688363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13501458 (or 13501455 counting only the distinct ones).

The product of its digits is 1719926784, while the sum is 72.

The spelling of 3638864688363 in words is "three trillion, six hundred thirty-eight billion, eight hundred sixty-four million, six hundred eighty-eight thousand, three hundred sixty-three".