9751799961 has 6 divisors (see below), whose sum is σ = 14085933290. Its totient is φ = 6501199968.

The previous prime is 9751799933. The next prime is 9751799971. The reversal of 9751799961 is 1699971579.

9751799961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9089715600 + 662084361 = 95340^2 + 25731^2 .

It is not a de Polignac number, because 9751799961 - 2⁵ = 9751799929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9751799971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 541766656 + ... + 541766673.

Almost surely, 2^9751799961 is an apocalyptic number.

It is an amenable number.

9751799961 is a deficient number, since it is larger than the sum of its proper divisors (4334133329).

9751799961 is a wasteful number, since it uses less digits than its factorization.

9751799961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083533335 (or 1083533332 counting only the distinct ones).

The product of its digits is 9644670, while the sum is 63.

The square root of 9751799961 is about 98751.2023268578. The cubic root of 9751799961 is about 2136.4607963324.

The spelling of 9751799961 in words is "nine billion, seven hundred fifty-one million, seven hundred ninety-nine thousand, nine hundred sixty-one".