20994969776 has 20 divisors (see below), whose sum is σ = 44375731944. Its totient is φ = 9543168000.

The previous prime is 20994969763. The next prime is 20994969803. The reversal of 20994969776 is 67796949902.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59644625 + ... + 59644976.

Almost surely, 2^20994969776 is an apocalyptic number.

It is an amenable number.

20994969776 is an abundant number, since it is smaller than the sum of its proper divisors (23380762168).

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

20994969776 is a wasteful number, since it uses less digits than its factorization.

20994969776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119289620 (or 119289614 counting only the distinct ones).

The product of its (nonzero) digits is 92588832, while the sum is 68.

The spelling of 20994969776 in words is "twenty billion, nine hundred ninety-four million, nine hundred sixty-nine thousand, seven hundred seventy-six".