28603511009 has 2 divisors, whose sum is σ = 28603511010. Its totient is φ = 28603511008.

The previous prime is 28603510997. The next prime is 28603511023. The reversal of 28603511009 is 90011530682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28393261009 + 210250000 = 168503^2 + 14500^2 .

It is a cyclic number.

It is not a de Polignac number, because 28603511009 - 2¹² = 28603506913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28603511009.

It is not a weakly prime, because it can be changed into another prime (28603511089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14301755504 + 14301755505.

It is an arithmetic number, because the mean of its divisors is an integer number (14301755505).

Almost surely, 2^28603511009 is an apocalyptic number.

It is an amenable number.

28603511009 is a deficient number, since it is larger than the sum of its proper divisors (1).

28603511009 is an equidigital number, since it uses as much as digits as its factorization.

28603511009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 28603511009 in words is "twenty-eight billion, six hundred three million, five hundred eleven thousand, nine".