133031545000 has 160 divisors (see below), whose sum is σ = 335451152520. Its totient is φ = 49259520000.

The previous prime is 133031544973. The next prime is 133031545001. The reversal of 133031545000 is 545130331.

It can be written as a sum of positive squares in 20 ways, for example, as 85800954724 + 47230590276 = 292918^2 + 217326^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (133031545001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5172172 + ... + 5197828.

Almost surely, 2^133031545000 is an apocalyptic number.

133031545000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133031545000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167725576260).

133031545000 is an abundant number, since it is smaller than the sum of its proper divisors (202419607520).

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

133031545000 is a wasteful number, since it uses less digits than its factorization.

133031545000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25761 (or 25742 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 133031545000 its reverse (545130331), we get a palindrome (133576675331).

The spelling of 133031545000 in words is "one hundred thirty-three billion, thirty-one million, five hundred forty-five thousand".