28107845461 has 2 divisors, whose sum is σ = 28107845462. Its totient is φ = 28107845460.

The previous prime is 28107845449. The next prime is 28107845501. The reversal of 28107845461 is 16454870182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18825486436 + 9282359025 = 137206^2 + 96345^2 .

It is a cyclic number.

It is not a de Polignac number, because 28107845461 - 2⁷ = 28107845333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28107845261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14053922730 + 14053922731.

It is an arithmetic number, because the mean of its divisors is an integer number (14053922731).

Almost surely, 2^28107845461 is an apocalyptic number.

It is an amenable number.

28107845461 is a deficient number, since it is larger than the sum of its proper divisors (1).

28107845461 is an equidigital number, since it uses as much as digits as its factorization.

28107845461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 28107845461 in words is "twenty-eight billion, one hundred seven million, eight hundred forty-five thousand, four hundred sixty-one".