9659951478 has 48 divisors (see below), whose sum is σ = 21737803776. Its totient is φ = 3096966960.

The previous prime is 9659951459. The next prime is 9659951489. The reversal of 9659951478 is 8741599569.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37851 + ... + 144057.

It is an arithmetic number, because the mean of its divisors is an integer number (452870912).

Almost surely, 2^9659951478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9659951478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10868901888).

9659951478 is an abundant number, since it is smaller than the sum of its proper divisors (12077852298).

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

9659951478 is a wasteful number, since it uses less digits than its factorization.

9659951478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106409 (or 106406 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 63.

The square root of 9659951478 is about 98285.0521595222. The cubic root of 9659951478 is about 2129.7321239531.

The spelling of 9659951478 in words is "nine billion, six hundred fifty-nine million, nine hundred fifty-one thousand, four hundred seventy-eight".