66844910280088 has 48 divisors (see below), whose sum is σ = 128469920543640. Its totient is φ = 32606201541120.

The previous prime is 66844910280013. The next prime is 66844910280089. The reversal of 66844910280088 is 88008201944866.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66844910280089) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 543600820 + ... + 543723772.

Almost surely, 2^{66844910280088} is an apocalyptic number.

It is an amenable number.

66844910280088 is a deficient number, since it is larger than the sum of its proper divisors (61625010263552).

66844910280088 is a wasteful number, since it uses less digits than its factorization.

66844910280088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163468 (or 163423 counting only the distinct ones).

The product of its (nonzero) digits is 42467328, while the sum is 64.

The spelling of 66844910280088 in words is "sixty-six trillion, eight hundred forty-four billion, nine hundred ten million, two hundred eighty thousand, eighty-eight".