133642380066 has 96 divisors (see below), whose sum is σ = 297612285120. Its totient is φ = 39960490752.

The previous prime is 133642380037. The next prime is 133642380097. The reversal of 133642380066 is 660083246331.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41005545 + ... + 41008803.

It is an arithmetic number, because the mean of its divisors is an integer number (3100127970).

Almost surely, 2^133642380066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133642380066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148806142560).

133642380066 is an abundant number, since it is smaller than the sum of its proper divisors (163969905054).

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

133642380066 is a wasteful number, since it uses less digits than its factorization.

133642380066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420 (or 4407 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 42.

The spelling of 133642380066 in words is "one hundred thirty-three billion, six hundred forty-two million, three hundred eighty thousand, sixty-six".