4651661163663 has 6 divisors (see below), whose sum is σ = 6719066125304. Its totient is φ = 3101107442436.

The previous prime is 4651661163659. The next prime is 4651661163679. The reversal of 4651661163663 is 3663611661564.

4651661163663 is a `hidden beast` number, since 4 + 6 + 5 + 16 + 611 + 6 + 3 + 6 + 6 + 3 = 666.

It is not a de Polignac number, because 4651661163663 - 2² = 4651661163659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4651661163623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 258425620195 + ... + 258425620212.

Almost surely, 2^{4651661163663} is an apocalyptic number.

4651661163663 is a deficient number, since it is larger than the sum of its proper divisors (2067404961641).

4651661163663 is a wasteful number, since it uses less digits than its factorization.

4651661163663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516851240413 (or 516851240410 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 54.

The spelling of 4651661163663 in words is "four trillion, six hundred fifty-one billion, six hundred sixty-one million, one hundred sixty-three thousand, six hundred sixty-three".