10009920811 has 4 divisors (see below), whose sum is σ = 10919913624. Its totient is φ = 9099928000.

The previous prime is 10009920799. The next prime is 10009920821. The reversal of 10009920811 is 11802990001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11802990001 = 11 ⋅1072999091.

It is a cyclic number.

It is not a de Polignac number, because 10009920811 - 2²⁹ = 9473049899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10009920821) 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, 454996390 + ... + 454996411.

It is an arithmetic number, because the mean of its divisors is an integer number (2729978406).

Almost surely, 2^10009920811 is an apocalyptic number.

10009920811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10009920811 is a deficient number, since it is larger than the sum of its proper divisors (909992813).

10009920811 is an equidigital number, since it uses as much as digits as its factorization.

10009920811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909992812.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 10009920811 in words is "ten billion, nine million, nine hundred twenty thousand, eight hundred eleven".