6663621046144 has 64 divisors (see below), whose sum is σ = 13715613444960. Its totient is φ = 3222349461504.

The previous prime is 6663621046129. The next prime is 6663621046151. The reversal of 6663621046144 is 4416401263666.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×6663621046144³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3421707 + ... + 5003530.

Almost surely, 2^{6663621046144} is an apocalyptic number.

6663621046144 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6663621046144 is an abundant number, since it is smaller than the sum of its proper divisors (7051992398816).

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

6663621046144 is a wasteful number, since it uses less digits than its factorization.

6663621046144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8425455 (or 8425443 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 49.

The spelling of 6663621046144 in words is "six trillion, six hundred sixty-three billion, six hundred twenty-one million, forty-six thousand, one hundred forty-four".