28573464991 has 2 divisors, whose sum is σ = 28573464992. Its totient is φ = 28573464990.

The previous prime is 28573464989. The next prime is 28573465057. The reversal of 28573464991 is 19946437582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28573464991 - 2¹ = 28573464989 is a prime.

Together with 28573464989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28573464791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14286732495 + 14286732496.

It is an arithmetic number, because the mean of its divisors is an integer number (14286732496).

Almost surely, 2^28573464991 is an apocalyptic number.

28573464991 is a deficient number, since it is larger than the sum of its proper divisors (1).

28573464991 is an equidigital number, since it uses as much as digits as its factorization.

28573464991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 58.

The spelling of 28573464991 in words is "twenty-eight billion, five hundred seventy-three million, four hundred sixty-four thousand, nine hundred ninety-one".