9661445963 has 8 divisors (see below), whose sum is σ = 10408767600. Its totient is φ = 8914714848.

The previous prime is 9661445951. The next prime is 9661445993. The reversal of 9661445963 is 3695441669.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9661445963 - 2⁴ = 9661445947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9661445993) 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, 113348 + ... + 179361.

It is an arithmetic number, because the mean of its divisors is an integer number (1301095950).

Almost surely, 2^9661445963 is an apocalyptic number.

9661445963 is a deficient number, since it is larger than the sum of its proper divisors (747321637).

9661445963 is a wasteful number, since it uses less digits than its factorization.

9661445963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295261.

The product of its digits is 4199040, while the sum is 53.

The square root of 9661445963 is about 98292.6546747009. The cubic root of 9661445963 is about 2129.8419481275.

The spelling of 9661445963 in words is "nine billion, six hundred sixty-one million, four hundred forty-five thousand, nine hundred sixty-three".