10992811819 has 4 divisors (see below), whose sum is σ = 11992158360. Its totient is φ = 9993465280.

The previous prime is 10992811793. The next prime is 10992811861. The reversal of 10992811819 is 91811829901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10992811819 - 2⁵ = 10992811787 is a prime.

It is a super-2 number, since 2×10992811819² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10992818819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499673254 + ... + 499673275.

It is an arithmetic number, because the mean of its divisors is an integer number (2998039590).

Almost surely, 2^10992811819 is an apocalyptic number.

10992811819 is a deficient number, since it is larger than the sum of its proper divisors (999346541).

10992811819 is an equidigital number, since it uses as much as digits as its factorization.

10992811819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999346540.

The product of its (nonzero) digits is 93312, while the sum is 49.

The spelling of 10992811819 in words is "ten billion, nine hundred ninety-two million, eight hundred eleven thousand, eight hundred nineteen".