9951767916 has 24 divisors (see below), whose sum is σ = 23337484800. Its totient is φ = 3300585552.

The previous prime is 9951767911. The next prime is 9951767941. The reversal of 9951767916 is 6197671599.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 9951767916.

It is not an unprimeable number, because it can be changed into a prime (9951767911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2081316 + ... + 2086091.

It is an arithmetic number, because the mean of its divisors is an integer number (972395200).

Almost surely, 2^9951767916 is an apocalyptic number.

It is an amenable number.

9951767916 is an abundant number, since it is smaller than the sum of its proper divisors (13385716884).

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

9951767916 is a wasteful number, since it uses less digits than its factorization.

9951767916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167613 (or 4167611 counting only the distinct ones).

The product of its digits is 6429780, while the sum is 60.

The square root of 9951767916 is about 99758.5480848634. The cubic root of 9951767916 is about 2150.9653437476.

The spelling of 9951767916 in words is "nine billion, nine hundred fifty-one million, seven hundred sixty-seven thousand, nine hundred sixteen".