999766668000 has 384 divisors, whose sum is σ = 3618691614720. Its totient is φ = 240011059200.

The previous prime is 999766667993. The next prime is 999766668029. The reversal of 999766668000 is 866667999.

999766668000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4585461 + ... + 4798539.

It is an arithmetic number, because the mean of its divisors is an integer number (9423676080).

Almost surely, 2^999766668000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999766668000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1809345807360).

999766668000 is an abundant number, since it is smaller than the sum of its proper divisors (2618924946720).

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

999766668000 is a wasteful number, since it uses less digits than its factorization.

999766668000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213147 (or 213129 counting only the distinct ones).

The product of its (nonzero) digits is 52907904, while the sum is 66.

The spelling of 999766668000 in words is "nine hundred ninety-nine billion, seven hundred sixty-six million, six hundred sixty-eight thousand".