133520623733 has 4 divisors (see below), whose sum is σ = 152594998560. Its totient is φ = 114446248908.

The previous prime is 133520623727. The next prime is 133520623751. The reversal of 133520623733 is 337326025331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 337326025331 = 6011 ⋅56118121.

It is a cyclic number.

It is not a de Polignac number, because 133520623733 - 2¹⁴ = 133520607349 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 (133520623723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9537187403 + ... + 9537187416.

It is an arithmetic number, because the mean of its divisors is an integer number (38148749640).

Almost surely, 2^133520623733 is an apocalyptic number.

It is an amenable number.

133520623733 is a deficient number, since it is larger than the sum of its proper divisors (19074374827).

133520623733 is an equidigital number, since it uses as much as digits as its factorization.

133520623733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19074374826.

The product of its (nonzero) digits is 204120, while the sum is 38.

The spelling of 133520623733 in words is "one hundred thirty-three billion, five hundred twenty million, six hundred twenty-three thousand, seven hundred thirty-three".