133531404536540 has 24 divisors (see below), whose sum is σ = 280416170290032. Its totient is φ = 53412519764480.

The previous prime is 133531404536513. The next prime is 133531404536549. The reversal of 133531404536540 is 45635404135331.

It is a super-3 number, since 3×133531404536540³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133531404536549) 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, 41406092 + ... + 44514348.

It is an arithmetic number, because the mean of its divisors is an integer number (11684007095418).

Almost surely, 2^{133531404536540} is an apocalyptic number.

133531404536540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133531404536540 is an abundant number, since it is smaller than the sum of its proper divisors (146884765753492).

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

133531404536540 is a wasteful number, since it uses less digits than its factorization.

133531404536540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5256277 (or 5256275 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 47.

The spelling of 133531404536540 in words is "one hundred thirty-three trillion, five hundred thirty-one billion, four hundred four million, five hundred thirty-six thousand, five hundred forty".