666066015006 has 64 divisors (see below), whose sum is σ = 1552342910976. Its totient is φ = 186571756800.

The previous prime is 666066014947. The next prime is 666066015023. The reversal of 666066015006 is 600510660666.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2827291 + ... + 3053801.

It is an arithmetic number, because the mean of its divisors is an integer number (24255357984).

Almost surely, 2^666066015006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666066015006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776171455488).

666066015006 is an abundant number, since it is smaller than the sum of its proper divisors (886276895970).

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

666066015006 is a wasteful number, since it uses less digits than its factorization.

666066015006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227897.

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 666066015006 in words is "six hundred sixty-six billion, sixty-six million, fifteen thousand, six".