20000747776 has 27 divisors (see below), whose sum is σ = 39927884871. Its totient is φ = 9999242496.

The previous prime is 20000747749. The next prime is 20000747777. The reversal of 20000747776 is 67774700002.

The square root of 20000747776 is 141424.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20000747777) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2258365 + ... + 2267203.

Almost surely, 2^20000747776 is an apocalyptic number.

20000747776 is the 141424-th square number.

It is an amenable number.

20000747776 is a deficient number, since it is larger than the sum of its proper divisors (19927137095).

20000747776 is an frugal number, since it uses more digits than its factorization.

20000747776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17694 (or 8841 counting only the distinct ones).

The product of its (nonzero) digits is 115248, while the sum is 40.

The spelling of 20000747776 in words is "twenty billion, seven hundred forty-seven thousand, seven hundred seventy-six".