28994375364223 has 2 divisors, whose sum is σ = 28994375364224. Its totient is φ = 28994375364222.

The previous prime is 28994375364217. The next prime is 28994375364257. The reversal of 28994375364223 is 32246357349982.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28994375364223 is a prime.

It is a super-2 number, since 2×28994375364223² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28994375364523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14497187682111 + 14497187682112.

It is an arithmetic number, because the mean of its divisors is an integer number (14497187682112).

Almost surely, 2^{28994375364223} is an apocalyptic number.

28994375364223 is a deficient number, since it is larger than the sum of its proper divisors (1).

28994375364223 is an equidigital number, since it uses as much as digits as its factorization.

28994375364223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470292480, while the sum is 67.

The spelling of 28994375364223 in words is "twenty-eight trillion, nine hundred ninety-four billion, three hundred seventy-five million, three hundred sixty-four thousand, two hundred twenty-three".