133666210859472 has 120 divisors (see below), whose sum is σ = 380560723783968. Its totient is φ = 43784814470400.

The previous prime is 133666210859459. The next prime is 133666210859491. The reversal of 133666210859472 is 274958012666331.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2609463 + ... + 16557225.

It is a 1-persistent number, because it is pandigital, but 2⋅133666210859472 = 267332421718944 is not.

Almost surely, 2^{133666210859472} is an apocalyptic number.

133666210859472 is a gapful number since it is divisible by the number (12) 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 133666210859472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190280361891984).

133666210859472 is an abundant number, since it is smaller than the sum of its proper divisors (246894512924496).

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

133666210859472 is a wasteful number, since it uses less digits than its factorization.

133666210859472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13948929 (or 13948920 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 63.

The spelling of 133666210859472 in words is "one hundred thirty-three trillion, six hundred sixty-six billion, two hundred ten million, eight hundred fifty-nine thousand, four hundred seventy-two".