28416648251 has 2 divisors, whose sum is σ = 28416648252. Its totient is φ = 28416648250.

The previous prime is 28416648241. The next prime is 28416648259. The reversal of 28416648251 is 15284661482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28416648251 - 2⁶ = 28416648187 is a prime.

It is a super-2 number, since 2×28416648251² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28416648196 and 28416648205.

It is not a weakly prime, because it can be changed into another prime (28416648259) 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, 14208324125 + 14208324126.

It is an arithmetic number, because the mean of its divisors is an integer number (14208324126).

Almost surely, 2^28416648251 is an apocalyptic number.

28416648251 is a deficient number, since it is larger than the sum of its proper divisors (1).

28416648251 is an equidigital number, since it uses as much as digits as its factorization.

28416648251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 737280, while the sum is 47.

The spelling of 28416648251 in words is "twenty-eight billion, four hundred sixteen million, six hundred forty-eight thousand, two hundred fifty-one".