11099969989 has 2 divisors, whose sum is σ = 11099969990. Its totient is φ = 11099969988.

The previous prime is 11099969977. The next prime is 11099970061. The reversal of 11099969989 is 98996999011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8452044225 + 2647925764 = 91935^2 + 51458^2 .

It is a cyclic number.

It is not a de Polignac number, because 11099969989 - 2⁷ = 11099969861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11099969939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5549984994 + 5549984995.

It is an arithmetic number, because the mean of its divisors is an integer number (5549984995).

Almost surely, 2^11099969989 is an apocalyptic number.

It is an amenable number.

11099969989 is a deficient number, since it is larger than the sum of its proper divisors (1).

11099969989 is an equidigital number, since it uses as much as digits as its factorization.

11099969989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25509168, while the sum is 70.

The spelling of 11099969989 in words is "eleven billion, ninety-nine million, nine hundred sixty-nine thousand, nine hundred eighty-nine".