20996109926 has 16 divisors (see below), whose sum is σ = 34434842688. Its totient is φ = 9522138600.

The previous prime is 20996109919. The next prime is 20996109929. The reversal of 20996109926 is 62990169902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20996109929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067420 + ... + 1086911.

It is an arithmetic number, because the mean of its divisors is an integer number (2152177668).

Almost surely, 2^20996109926 is an apocalyptic number.

20996109926 is a deficient number, since it is larger than the sum of its proper divisors (13438732762).

20996109926 is a wasteful number, since it uses less digits than its factorization.

20996109926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154787.

The product of its (nonzero) digits is 944784, while the sum is 53.

The spelling of 20996109926 in words is "twenty billion, nine hundred ninety-six million, one hundred nine thousand, nine hundred twenty-six".