13555454023431 has 6 divisors (see below), whose sum is σ = 19580100256080. Its totient is φ = 9036969348948.

The previous prime is 13555454023403. The next prime is 13555454023439. The reversal of 13555454023431 is 13432045455531.

13555454023431 is a `hidden beast` number, since 1 + 3 + 5 + 5 + 54 + 540 + 23 + 4 + 31 = 666.

It is not a de Polignac number, because 13555454023431 - 2⁶ = 13555454023367 is a prime.

It is a super-2 number, since 2×13555454023431² (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 (13555454023439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 753080779071 + ... + 753080779088.

It is an arithmetic number, because the mean of its divisors is an integer number (3263350042680).

Almost surely, 2^{13555454023431} is an apocalyptic number.

13555454023431 is a deficient number, since it is larger than the sum of its proper divisors (6024646232649).

13555454023431 is a wasteful number, since it uses less digits than its factorization.

13555454023431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506161558165 (or 1506161558162 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

Adding to 13555454023431 its reverse (13432045455531), we get a palindrome (26987499478962).

The spelling of 13555454023431 in words is "thirteen trillion, five hundred fifty-five billion, four hundred fifty-four million, twenty-three thousand, four hundred thirty-one".