28410844661 has 2 divisors, whose sum is σ = 28410844662. Its totient is φ = 28410844660.

The previous prime is 28410844603. The next prime is 28410844663. The reversal of 28410844661 is 16644801482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25382543761 + 3028300900 = 159319^2 + 55030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28410844661 is a prime.

Together with 28410844663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28410844663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14205422330 + 14205422331.

It is an arithmetic number, because the mean of its divisors is an integer number (14205422331).

Almost surely, 2^28410844661 is an apocalyptic number.

It is an amenable number.

28410844661 is a deficient number, since it is larger than the sum of its proper divisors (1).

28410844661 is an equidigital number, since it uses as much as digits as its factorization.

28410844661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 28410844661 in words is "twenty-eight billion, four hundred ten million, eight hundred forty-four thousand, six hundred sixty-one".