20694184896 has 168 divisors, whose sum is σ = 69483280896. Its totient is φ = 5375086080.

The previous prime is 20694184873. The next prime is 20694184937. The reversal of 20694184896 is 69848149602.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3505 + ... + 203471.

Almost surely, 2^20694184896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20694184896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34741640448).

20694184896 is an abundant number, since it is smaller than the sum of its proper divisors (48789096000).

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

20694184896 is a wasteful number, since it uses less digits than its factorization.

20694184896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200007 (or 199990 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 57.

The spelling of 20694184896 in words is "twenty billion, six hundred ninety-four million, one hundred eighty-four thousand, eight hundred ninety-six".