13155352122431 has 32 divisors (see below), whose sum is σ = 13736879378880. Its totient is φ = 12586825073664.

The previous prime is 13155352122427. The next prime is 13155352122443. The reversal of 13155352122431 is 13422125355131.

It is a cyclic number.

It is not a de Polignac number, because 13155352122431 - 2² = 13155352122427 is a prime.

It is a super-2 number, since 2×13155352122431² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13155352122481) 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, 1303408421 + ... + 1303418513.

It is an arithmetic number, because the mean of its divisors is an integer number (429277480590).

Almost surely, 2^{13155352122431} is an apocalyptic number.

13155352122431 is a deficient number, since it is larger than the sum of its proper divisors (581527256449).

13155352122431 is a wasteful number, since it uses less digits than its factorization.

13155352122431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11595.

The product of its digits is 108000, while the sum is 38.

Adding to 13155352122431 its reverse (13422125355131), we get a palindrome (26577477477562).

The spelling of 13155352122431 in words is "thirteen trillion, one hundred fifty-five billion, three hundred fifty-two million, one hundred twenty-two thousand, four hundred thirty-one".