133610121623 has 32 divisors (see below), whose sum is σ = 157376286720. Its totient is φ = 112066306560.

The previous prime is 133610121611. The next prime is 133610121637. The reversal of 133610121623 is 326121016331.

It is not a de Polignac number, because 133610121623 - 2¹⁰ = 133610120599 is a prime.

It is a super-2 number, since 2×133610121623² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133610121223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13146818 + ... + 13156976.

It is an arithmetic number, because the mean of its divisors is an integer number (4918008960).

Almost surely, 2^133610121623 is an apocalyptic number.

133610121623 is a deficient number, since it is larger than the sum of its proper divisors (23766165097).

133610121623 is a wasteful number, since it uses less digits than its factorization.

133610121623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11567.

The product of its (nonzero) digits is 3888, while the sum is 29.

Adding to 133610121623 its reverse (326121016331), we get a palindrome (459731137954).

The spelling of 133610121623 in words is "one hundred thirty-three billion, six hundred ten million, one hundred twenty-one thousand, six hundred twenty-three".