11454021421143 has 24 divisors (see below), whose sum is σ = 17766319727232. Its totient is φ = 6544823980464.

The previous prime is 11454021421093. The next prime is 11454021421151. The reversal of 11454021421143 is 34112412045411.

It is not a de Polignac number, because 11454021421143 - 2²¹ = 11454019323991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11454021321143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 959446 + ... + 4881452.

It is an arithmetic number, because the mean of its divisors is an integer number (740263321968).

Almost surely, 2^{11454021421143} is an apocalyptic number.

11454021421143 is a deficient number, since it is larger than the sum of its proper divisors (6312298306089).

11454021421143 is a wasteful number, since it uses less digits than its factorization.

11454021421143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3941891 (or 3941884 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

Adding to 11454021421143 its reverse (34112412045411), we get a palindrome (45566433466554).

The spelling of 11454021421143 in words is "eleven trillion, four hundred fifty-four billion, twenty-one million, four hundred twenty-one thousand, one hundred forty-three".