126666640170 has 96 divisors (see below), whose sum is σ = 377219980800. Its totient is φ = 28887828480.

The previous prime is 126666640169. The next prime is 126666640201. The reversal of 126666640170 is 71046666621.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58975 + ... + 506765.

It is an arithmetic number, because the mean of its divisors is an integer number (3929374800).

Almost surely, 2^126666640170 is an apocalyptic number.

126666640170 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 126666640170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188609990400).

126666640170 is an abundant number, since it is smaller than the sum of its proper divisors (250553340630).

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

126666640170 is a wasteful number, since it uses less digits than its factorization.

126666640170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448260 (or 448257 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 126666640170 in words is "one hundred twenty-six billion, six hundred sixty-six million, six hundred forty thousand, one hundred seventy".