28421037727 has 2 divisors, whose sum is σ = 28421037728. Its totient is φ = 28421037726.

The previous prime is 28421037679. The next prime is 28421037761. The reversal of 28421037727 is 72773012482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28421037727 - 2¹⁵ = 28421004959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28421037527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14210518863 + 14210518864.

It is an arithmetic number, because the mean of its divisors is an integer number (14210518864).

Almost surely, 2^28421037727 is an apocalyptic number.

28421037727 is a deficient number, since it is larger than the sum of its proper divisors (1).

28421037727 is an equidigital number, since it uses as much as digits as its factorization.

28421037727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 263424, while the sum is 43.

The spelling of 28421037727 in words is "twenty-eight billion, four hundred twenty-one million, thirty-seven thousand, seven hundred twenty-seven".