16660446606270 has 128 divisors (see below), whose sum is σ = 45651044275200. Its totient is φ = 4320585173376.

The previous prime is 16660446606241. The next prime is 16660446606311. The reversal of 16660446606270 is 7260664406661.

It is a happy number.

It is a super-2 number, since 2×16660446606270² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 19960657 + ... + 20778563.

It is an arithmetic number, because the mean of its divisors is an integer number (356648783400).

Almost surely, 2^{16660446606270} is an apocalyptic number.

16660446606270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16660446606270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22825522137600).

16660446606270 is an abundant number, since it is smaller than the sum of its proper divisors (28990597668930).

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

16660446606270 is a wasteful number, since it uses less digits than its factorization.

16660446606270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819999 (or 819993 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 54.

The spelling of 16660446606270 in words is "sixteen trillion, six hundred sixty billion, four hundred forty-six million, six hundred six thousand, two hundred seventy".