10999999999 has 2 divisors, whose sum is σ = 11000000000. Its totient is φ = 10999999998.

The previous prime is 10999999949. The next prime is 11000000021. The reversal of 10999999999 is 99999999901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10999999999 - 2¹⁷ = 10999868927 is a prime.

10999999999 is a modest number, since divided by 999999 gives 10999 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10999999919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5499999999 + 5500000000.

It is an arithmetic number, because the mean of its divisors is an integer number (5500000000).

Almost surely, 2^10999999999 is an apocalyptic number.

10999999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

10999999999 is an equidigital number, since it uses as much as digits as its factorization.

10999999999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387420489, while the sum is 82.

It can be divided in two parts, 1099 and 9999999, that multiplied together give a palindrome (10989998901).

The spelling of 10999999999 in words is "ten billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".