9951658768 has 40 divisors (see below), whose sum is σ = 20403086976. Its totient is φ = 4692441600.

The previous prime is 9951658721. The next prime is 9951658771. The reversal of 9951658768 is 8678561599.

It is a super-2 number, since 2×9951658768² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164313 + ... + 216568.

Almost surely, 2^9951658768 is an apocalyptic number.

It is an amenable number.

9951658768 is an abundant number, since it is smaller than the sum of its proper divisors (10451428208).

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

9951658768 is a wasteful number, since it uses less digits than its factorization.

9951658768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380983 (or 380977 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 64.

The square root of 9951658768 is about 99758.0010224744. The cubic root of 9951658768 is about 2150.9574800050.

The spelling of 9951658768 in words is "nine billion, nine hundred fifty-one million, six hundred fifty-eight thousand, seven hundred sixty-eight".