9945717776 has 20 divisors (see below), whose sum is σ = 20107647552. Its totient is φ = 4756647456.

The previous prime is 9945717773. The next prime is 9945717829. The reversal of 9945717776 is 6777175499.

It is not an unprimeable number, because it can be changed into a prime (9945717773) 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, 13512836 + ... + 13513571.

Almost surely, 2^9945717776 is an apocalyptic number.

It is an amenable number.

9945717776 is an abundant number, since it is smaller than the sum of its proper divisors (10161929776).

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

9945717776 is a wasteful number, since it uses less digits than its factorization.

9945717776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27026438 (or 27026432 counting only the distinct ones).

The product of its digits is 23337720, while the sum is 62.

The square root of 9945717776 is about 99728.2195569539. The cubic root of 9945717776 is about 2150.5293649458.

The spelling of 9945717776 in words is "nine billion, nine hundred forty-five million, seven hundred seventeen thousand, seven hundred seventy-six".