10992811820 has 24 divisors (see below), whose sum is σ = 24088597344. Its totient is φ = 4205945216.

The previous prime is 10992811793. The next prime is 10992811861. The reversal of 10992811820 is 2811829901.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11948249 + ... + 11949168.

It is an arithmetic number, because the mean of its divisors is an integer number (1003691556).

Almost surely, 2^10992811820 is an apocalyptic number.

10992811820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10992811820 is an abundant number, since it is smaller than the sum of its proper divisors (13095785524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10992811820 is a wasteful number, since it uses less digits than its factorization.

10992811820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23897449 (or 23897447 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 41.

The spelling of 10992811820 in words is "ten billion, nine hundred ninety-two million, eight hundred eleven thousand, eight hundred twenty".