21873375143 has 2 divisors, whose sum is σ = 21873375144. Its totient is φ = 21873375142.

The previous prime is 21873375133. The next prime is 21873375151. The reversal of 21873375143 is 34157337812.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21873375143 - 2⁴ = 21873375127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21873375094 and 21873375103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21873375103) 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 as a sum of consecutive naturals, namely, 10936687571 + 10936687572.

It is an arithmetic number, because the mean of its divisors is an integer number (10936687572).

Almost surely, 2^21873375143 is an apocalyptic number.

21873375143 is a deficient number, since it is larger than the sum of its proper divisors (1).

21873375143 is an equidigital number, since it uses as much as digits as its factorization.

21873375143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 44.

The spelling of 21873375143 in words is "twenty-one billion, eight hundred seventy-three million, three hundred seventy-five thousand, one hundred forty-three".