133505442503 has 8 divisors (see below), whose sum is σ = 140554292400. Its totient is φ = 126458817408.

The previous prime is 133505442493. The next prime is 133505442527. The reversal of 133505442503 is 305244505331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133505442503 - 2¹⁶ = 133505376967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133505442563) 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, 432308 + ... + 673721.

It is an arithmetic number, because the mean of its divisors is an integer number (17569286550).

Almost surely, 2^133505442503 is an apocalyptic number.

133505442503 is a deficient number, since it is larger than the sum of its proper divisors (7048849897).

133505442503 is a wasteful number, since it uses less digits than its factorization.

133505442503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112401.

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 133505442503 its reverse (305244505331), we get a palindrome (438749947834).

The spelling of 133505442503 in words is "one hundred thirty-three billion, five hundred five million, four hundred forty-two thousand, five hundred three".