133524541605 has 144 divisors (see below), whose sum is σ = 270035057664. Its totient is φ = 56150115840.

The previous prime is 133524541603. The next prime is 133524541627. The reversal of 133524541605 is 506145425331.

It is a happy number.

It is not a de Polignac number, because 133524541605 - 2¹ = 133524541603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133524541603) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 39374460 + ... + 39377850.

It is an arithmetic number, because the mean of its divisors is an integer number (1875243456).

Almost surely, 2^133524541605 is an apocalyptic number.

133524541605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133524541605 is an abundant number, since it is smaller than the sum of its proper divisors (136510516059).

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

133524541605 is a wasteful number, since it uses less digits than its factorization.

133524541605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756 (or 3736 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 133524541605 its reverse (506145425331), we get a palindrome (639669966936).

The spelling of 133524541605 in words is "one hundred thirty-three billion, five hundred twenty-four million, five hundred forty-one thousand, six hundred five".