20406611796 has 12 divisors (see below), whose sum is σ = 47615427552. Its totient is φ = 6802203928.

The previous prime is 20406611791. The next prime is 20406611803. The reversal of 20406611796 is 69711660402.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20406611791) 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, 850275480 + ... + 850275503.

It is an arithmetic number, because the mean of its divisors is an integer number (3967952296).

Almost surely, 2^20406611796 is an apocalyptic number.

It is an amenable number.

20406611796 is an abundant number, since it is smaller than the sum of its proper divisors (27208815756).

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

20406611796 is a wasteful number, since it uses less digits than its factorization.

20406611796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700550990 (or 1700550988 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 20406611796 in words is "twenty billion, four hundred six million, six hundred eleven thousand, seven hundred ninety-six".