663453306144664 has 64 divisors (see below), whose sum is σ = 1453477261916160. Its totient is φ = 277991668152960.

The previous prime is 663453306144653. The next prime is 663453306144689. The reversal of 663453306144664 is 466441603354366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131461612 + ... + 136415035.

It is an arithmetic number, because the mean of its divisors is an integer number (22710582217440).

Almost surely, 2^{663453306144664} is an apocalyptic number.

It is an amenable number.

663453306144664 is an abundant number, since it is smaller than the sum of its proper divisors (790023955771496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663453306144664 is a wasteful number, since it uses less digits than its factorization.

663453306144664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267877648 (or 267877644 counting only the distinct ones).

The product of its (nonzero) digits is 268738560, while the sum is 61.

The spelling of 663453306144664 in words is "six hundred sixty-three trillion, four hundred fifty-three billion, three hundred six million, one hundred forty-four thousand, six hundred sixty-four".