28060621873 has 2 divisors, whose sum is σ = 28060621874. Its totient is φ = 28060621872.

The previous prime is 28060621871. The next prime is 28060621909. The reversal of 28060621873 is 37812606082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24929883664 + 3130738209 = 157892^2 + 55953^2 .

It is a cyclic number.

It is not a de Polignac number, because 28060621873 - 2¹ = 28060621871 is a prime.

Together with 28060621871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28060621871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14030310936 + 14030310937.

It is an arithmetic number, because the mean of its divisors is an integer number (14030310937).

Almost surely, 2^28060621873 is an apocalyptic number.

It is an amenable number.

28060621873 is a deficient number, since it is larger than the sum of its proper divisors (1).

28060621873 is an equidigital number, since it uses as much as digits as its factorization.

28060621873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 28060621873 in words is "twenty-eight billion, sixty million, six hundred twenty-one thousand, eight hundred seventy-three".