133442335540 has 48 divisors (see below), whose sum is σ = 282146094720. Its totient is φ = 53012408960.

The previous prime is 133442335489. The next prime is 133442335549. The reversal of 133442335540 is 45533244331.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 133442335540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133442335549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3339801 + ... + 3379519.

It is an arithmetic number, because the mean of its divisors is an integer number (5878043640).

Almost surely, 2^133442335540 is an apocalyptic number.

133442335540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133442335540 is an abundant number, since it is smaller than the sum of its proper divisors (148703759180).

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

133442335540 is a wasteful number, since it uses less digits than its factorization.

133442335540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40872 (or 40870 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 37.

Adding to 133442335540 its reverse (45533244331), we get a palindrome (178975579871).

The spelling of 133442335540 in words is "one hundred thirty-three billion, four hundred forty-two million, three hundred thirty-five thousand, five hundred forty".