3646628266463 has 8 divisors (see below), whose sum is σ = 4488157866528. Its totient is φ = 2885244342624.

The previous prime is 3646628266441. The next prime is 3646628266471.

It is a happy number.

3646628266463 is nontrivially palindromic in base 10.

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

It is a de Polignac number, because none of the positive numbers 2^k-3646628266463 is a prime.

It is a super-3 number, since 3×3646628266463³ (a number of 39 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3646628266396 and 3646628266405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646628266423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20036418956 + ... + 20036419137.

It is an arithmetic number, because the mean of its divisors is an integer number (561019733316).

Almost surely, 2^{3646628266463} is an apocalyptic number.

3646628266463 is a deficient number, since it is larger than the sum of its proper divisors (841529600065).

3646628266463 is a wasteful number, since it uses less digits than its factorization.

3646628266463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40072838113.

The product of its digits is 214990848, while the sum is 62.

The spelling of 3646628266463 in words is "three trillion, six hundred forty-six billion, six hundred twenty-eight million, two hundred sixty-six thousand, four hundred sixty-three".