133503541000 has 128 divisors (see below), whose sum is σ = 315784085760. Its totient is φ = 52825344000.

The previous prime is 133503540977. The next prime is 133503541051. The reversal of 133503541000 is 145305331.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46241557 + ... + 46244443.

It is an arithmetic number, because the mean of its divisors is an integer number (2467063170).

Almost surely, 2^133503541000 is an apocalyptic number.

133503541000 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 133503541000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157892042880).

133503541000 is an abundant number, since it is smaller than the sum of its proper divisors (182280544760).

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

133503541000 is a wasteful number, since it uses less digits than its factorization.

133503541000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392 (or 3378 counting only the distinct ones).

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

Adding to 133503541000 its reverse (145305331), we get a palindrome (133648846331).

The spelling of 133503541000 in words is "one hundred thirty-three billion, five hundred three million, five hundred forty-one thousand".