660100656666000 has 640 divisors, whose sum is σ = 2399147593869312. Its totient is φ = 154755283200000.

The previous prime is 660100656665987. The next prime is 660100656666079. The reversal of 660100656666000 is 666656001066.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 285486547 + ... + 287789453.

Almost surely, 2^{660100656666000} is an apocalyptic number.

660100656666000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660100656666000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1199573796934656).

660100656666000 is an abundant number, since it is smaller than the sum of its proper divisors (1739046937203312).

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

660100656666000 is a wasteful number, since it uses less digits than its factorization.

660100656666000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303088 (or 2303072 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 48.

The spelling of 660100656666000 in words is "six hundred sixty trillion, one hundred billion, six hundred fifty-six million, six hundred sixty-six thousand".