12135552104431 has 16 divisors (see below), whose sum is σ = 14783595163200. Its totient is φ = 9724320345600.

The previous prime is 12135552104411. The next prime is 12135552104453. The reversal of 12135552104431 is 13440125553121.

It is not a de Polignac number, because 12135552104431 - 2¹⁷ = 12135551973359 is a prime.

It is a super-2 number, since 2×12135552104431² (a number of 27 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 (12135552104411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342195120 + ... + 342230581.

It is an arithmetic number, because the mean of its divisors is an integer number (923974697700).

Almost surely, 2^{12135552104431} is an apocalyptic number.

12135552104431 is a deficient number, since it is larger than the sum of its proper divisors (2648043058769).

12135552104431 is a wasteful number, since it uses less digits than its factorization.

12135552104431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684425874.

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 12135552104431 its reverse (13440125553121), we get a palindrome (25575677657552).

The spelling of 12135552104431 in words is "twelve trillion, one hundred thirty-five billion, five hundred fifty-two million, one hundred four thousand, four hundred thirty-one".