20091011092 has 24 divisors (see below), whose sum is σ = 36558385920. Its totient is φ = 9650489280.

The previous prime is 20091011089. The next prime is 20091011099. The reversal of 20091011092 is 29011019002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20091011099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574342 + ... + 608317.

It is an arithmetic number, because the mean of its divisors is an integer number (1523266080).

Almost surely, 2^20091011092 is an apocalyptic number.

It is an amenable number.

20091011092 is a deficient number, since it is larger than the sum of its proper divisors (16467374828).

20091011092 is a wasteful number, since it uses less digits than its factorization.

20091011092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182831 (or 1182829 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 25.

It can be divided in two parts, 2009 and 1011092, that added together give a palindrome (1013101).

The spelling of 20091011092 in words is "twenty billion, ninety-one million, eleven thousand, ninety-two".