666010010000 has 100 divisors (see below), whose sum is σ = 1613201010432. Its totient is φ = 266284368000.

The previous prime is 666010009997. The next prime is 666010010033. The reversal of 666010010000 is 10010666.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24216257 + ... + 24243743.

Almost surely, 2^666010010000 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 666010010000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (806600505216).

666010010000 is an abundant number, since it is smaller than the sum of its proper divisors (947191000432).

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

666010010000 is a wasteful number, since it uses less digits than its factorization.

666010010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29938 (or 29917 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 666010010000 its reverse (10010666), we get a palindrome (666020020666).

The spelling of 666010010000 in words is "six hundred sixty-six billion, ten million, ten thousand".