126666748800 has 144 divisors (see below), whose sum is σ = 451976090280. Its totient is φ = 33777792000.

The previous prime is 126666748799. The next prime is 126666748841. The reversal of 126666748800 is 8847666621.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2170276 + ... + 2227875.

Almost surely, 2^126666748800 is an apocalyptic number.

126666748800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126666748800 is an abundant number, since it is smaller than the sum of its proper divisors (325309341480).

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

126666748800 is a wasteful number, since it uses less digits than its factorization.

126666748800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4398181 (or 4398161 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 126666748800 in words is "one hundred twenty-six billion, six hundred sixty-six million, seven hundred forty-eight thousand, eight hundred".