133523441231636 has 6 divisors (see below), whose sum is σ = 233666022155370. Its totient is φ = 66761720615816.

The previous prime is 133523441231527. The next prime is 133523441231773. The reversal of 133523441231636 is 636132144325331.

It can be written as a sum of positive squares in only one way, i.e., 75329276411536 + 58194164820100 = 8679244^2 + 7628510^2 .

It is a super-2 number, since 2×133523441231636² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16690430153951 + ... + 16690430153958.

It is an arithmetic number, because the mean of its divisors is an integer number (38944337025895).

Almost surely, 2^{133523441231636} is an apocalyptic number.

It is an amenable number.

133523441231636 is a deficient number, since it is larger than the sum of its proper divisors (100142580923734).

133523441231636 is a wasteful number, since it uses less digits than its factorization.

133523441231636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33380860307913 (or 33380860307911 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 47.

Adding to 133523441231636 its reverse (636132144325331), we get a palindrome (769655585556967).

The spelling of 133523441231636 in words is "one hundred thirty-three trillion, five hundred twenty-three billion, four hundred forty-one million, two hundred thirty-one thousand, six hundred thirty-six".