28138644683143 has 2 divisors, whose sum is σ = 28138644683144. Its totient is φ = 28138644683142.

The previous prime is 28138644683131. The next prime is 28138644683231. The reversal of 28138644683143 is 34138644683182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28138644683143 - 2⁵ = 28138644683111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28138644680143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14069322341571 + 14069322341572.

It is an arithmetic number, because the mean of its divisors is an integer number (14069322341572).

Almost surely, 2^{28138644683143} is an apocalyptic number.

28138644683143 is a deficient number, since it is larger than the sum of its proper divisors (1).

28138644683143 is an equidigital number, since it uses as much as digits as its factorization.

28138644683143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63700992, while the sum is 61.

The spelling of 28138644683143 in words is "twenty-eight trillion, one hundred thirty-eight billion, six hundred forty-four million, six hundred eighty-three thousand, one hundred forty-three".