133978259344888 has 96 divisors (see below), whose sum is σ = 295287134234400. Its totient is φ = 56817383067648.

The previous prime is 133978259344883. The next prime is 133978259344933. The reversal of 133978259344888 is 888443952879331.

It is a happy number.

It is a hoax number, since the sum of its digits (82) coincides with the sum of the digits of its distinct prime factors.

It is a partition number, being equal to the number of ways a set of 243 identical objects can be partitioned into subset.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133978259344883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219588148 + ... + 220197436.

It is an arithmetic number, because the mean of its divisors is an integer number (3075907648275).

Almost surely, 2^{133978259344888} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133978259344888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147643567117200).

133978259344888 is an abundant number, since it is smaller than the sum of its proper divisors (161308874889512).

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

133978259344888 is a wasteful number, since it uses less digits than its factorization.

133978259344888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615189 (or 615178 counting only the distinct ones).

The product of its digits is 10032906240, while the sum is 82.

The spelling of 133978259344888 in words is "one hundred thirty-three trillion, nine hundred seventy-eight billion, two hundred fifty-nine million, three hundred forty-four thousand, eight hundred eighty-eight".