133189321940 has 24 divisors (see below), whose sum is σ = 288720079872. Its totient is φ = 51557156640.

The previous prime is 133189321919. The next prime is 133189321943. The reversal of 133189321940 is 49123981331.

It is a junction number, because it is equal to n+sod(n) for n = 133189321891 and 133189321900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133189321943) 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, 107410124 + ... + 107411363.

It is an arithmetic number, because the mean of its divisors is an integer number (12030003328).

Almost surely, 2^133189321940 is an apocalyptic number.

133189321940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133189321940 is an abundant number, since it is smaller than the sum of its proper divisors (155530757932).

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

133189321940 is a wasteful number, since it uses less digits than its factorization.

133189321940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214821527 (or 214821525 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 133189321940 in words is "one hundred thirty-three billion, one hundred eighty-nine million, three hundred twenty-one thousand, nine hundred forty".