133832891648 has 72 divisors (see below), whose sum is σ = 278988143616. Its totient is φ = 63954176000.

The previous prime is 133832891641. The next prime is 133832891681. The reversal of 133832891648 is 846198238331.

It is a super-2 number, since 2×133832891648² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133832891593 and 133832891602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133832891641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7651553 + ... + 7669023.

It is an arithmetic number, because the mean of its divisors is an integer number (3874835328).

Almost surely, 2^133832891648 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 133832891648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139494071808).

133832891648 is an abundant number, since it is smaller than the sum of its proper divisors (145155251968).

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

133832891648 is a wasteful number, since it uses less digits than its factorization.

133832891648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18811 (or 18797 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 56.

The spelling of 133832891648 in words is "one hundred thirty-three billion, eight hundred thirty-two million, eight hundred ninety-one thousand, six hundred forty-eight".