28768732901 has 2 divisors, whose sum is σ = 28768732902. Its totient is φ = 28768732900.

The previous prime is 28768732897. The next prime is 28768732907. The reversal of 28768732901 is 10923786782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15892384225 + 12876348676 = 126065^2 + 113474^2 .

It is a cyclic number.

It is not a de Polignac number, because 28768732901 - 2² = 28768732897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28768732907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14384366450 + 14384366451.

It is an arithmetic number, because the mean of its divisors is an integer number (14384366451).

Almost surely, 2^28768732901 is an apocalyptic number.

It is an amenable number.

28768732901 is a deficient number, since it is larger than the sum of its proper divisors (1).

28768732901 is an equidigital number, since it uses as much as digits as its factorization.

28768732901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 28768732901 in words is "twenty-eight billion, seven hundred sixty-eight million, seven hundred thirty-two thousand, nine hundred one".