21144132434403 has 32 divisors (see below), whose sum is σ = 34172961150720. Its totient is φ = 12814391004480.

The previous prime is 21144132434377. The next prime is 21144132434437. The reversal of 21144132434403 is 30443423144112.

21144132434403 is a `hidden beast` number, since 2 + 1 + 1 + 4 + 4 + 1 + 3 + 243 + 4 + 403 = 666.

It is not a de Polignac number, because 21144132434403 - 2⁹ = 21144132433891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21144132434203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16334376 + ... + 17581242.

It is an arithmetic number, because the mean of its divisors is an integer number (1067905035960).

Almost surely, 2^{21144132434403} is an apocalyptic number.

21144132434403 is a deficient number, since it is larger than the sum of its proper divisors (13028828716317).

21144132434403 is a wasteful number, since it uses less digits than its factorization.

21144132434403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303984 (or 1303978 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 21144132434403 its reverse (30443423144112), we get a palindrome (51587555578515).

The spelling of 21144132434403 in words is "twenty-one trillion, one hundred forty-four billion, one hundred thirty-two million, four hundred thirty-four thousand, four hundred three".