9961096658 has 6 divisors (see below), whose sum is σ = 14941856709. Its totient is φ = 4980477756.

The previous prime is 9961096601. The next prime is 9961096699. The reversal of 9961096658 is 8566901699.

It can be written as a sum of positive squares in 2 ways, for example, as 9051048769 + 910047889 = 95137^2 + 30167^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=70573.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9961096597 and 9961096606.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 105860 + ... + 176432.

Almost surely, 2^9961096658 is an apocalyptic number.

9961096658 is a deficient number, since it is larger than the sum of its proper divisors (4980760051).

9961096658 is an frugal number, since it uses more digits than its factorization.

9961096658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141148 (or 70575 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 59.

The square root of 9961096658 is about 99805.2937373564. The cubic root of 9961096658 is about 2151.6372355599.

The spelling of 9961096658 in words is "nine billion, nine hundred sixty-one million, ninety-six thousand, six hundred fifty-eight".