28900330097 has 2 divisors, whose sum is σ = 28900330098. Its totient is φ = 28900330096.

The previous prime is 28900330073. The next prime is 28900330153. The reversal of 28900330097 is 79003300982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18050191201 + 10850138896 = 134351^2 + 104164^2 .

It is a cyclic number.

It is not a de Polignac number, because 28900330097 - 2¹² = 28900326001 is a prime.

It is not a weakly prime, because it can be changed into another prime (28900330297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14450165048 + 14450165049.

It is an arithmetic number, because the mean of its divisors is an integer number (14450165049).

Almost surely, 2^28900330097 is an apocalyptic number.

It is an amenable number.

28900330097 is a deficient number, since it is larger than the sum of its proper divisors (1).

28900330097 is an equidigital number, since it uses as much as digits as its factorization.

28900330097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The spelling of 28900330097 in words is "twenty-eight billion, nine hundred million, three hundred thirty thousand, ninety-seven".