663146446628 has 12 divisors (see below), whose sum is σ = 1169644127232. Its totient is φ = 328962410280.

The previous prime is 663146446553. The next prime is 663146446631. The reversal of 663146446628 is 826644641366.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652702688 + ... + 652703703.

It is an arithmetic number, because the mean of its divisors is an integer number (97470343936).

Almost surely, 2^663146446628 is an apocalyptic number.

It is an amenable number.

663146446628 is a deficient number, since it is larger than the sum of its proper divisors (506497680604).

663146446628 is a wasteful number, since it uses less digits than its factorization.

663146446628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305406522 (or 1305406520 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 56.

The spelling of 663146446628 in words is "six hundred sixty-three billion, one hundred forty-six million, four hundred forty-six thousand, six hundred twenty-eight".