666651060100 has 72 divisors (see below), whose sum is σ = 1588978923840. Its totient is φ = 241641924480.

The previous prime is 666651060037. The next prime is 666651060107. The reversal of 666651060100 is 1060156666.

It is a self number, because there is not a number n which added to its sum of digits gives 666651060100.

It is not an unprimeable number, because it can be changed into a prime (666651060107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7583887 + ... + 7671286.

It is an arithmetic number, because the mean of its divisors is an integer number (22069151720).

Almost surely, 2^666651060100 is an apocalyptic number.

It is an amenable number.

666651060100 is an abundant number, since it is smaller than the sum of its proper divisors (922327863740).

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

666651060100 is a wasteful number, since it uses less digits than its factorization.

666651060100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15255229 (or 15255222 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 666651060100 in words is "six hundred sixty-six billion, six hundred fifty-one million, sixty thousand, one hundred".