9991770416 has 10 divisors (see below), whose sum is σ = 19359055212. Its totient is φ = 4995885200.

The previous prime is 9991770409. The next prime is 9991770473. The reversal of 9991770416 is 6140771999.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312242810 + ... + 312242841.

Almost surely, 2^9991770416 is an apocalyptic number.

It is an amenable number.

9991770416 is a deficient number, since it is larger than the sum of its proper divisors (9367284796).

9991770416 is a wasteful number, since it uses less digits than its factorization.

9991770416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624485659 (or 624485653 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 53.

The square root of 9991770416 is about 99958.8436107581. The cubic root of 9991770416 is about 2153.8435244589.

The spelling of 9991770416 in words is "nine billion, nine hundred ninety-one million, seven hundred seventy thousand, four hundred sixteen".