9661934672 has 40 divisors (see below), whose sum is σ = 20810334720. Its totient is φ = 4315501440.

The previous prime is 9661934671. The next prime is 9661934707. The reversal of 9661934672 is 2764391669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9661934671) 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, 742772 + ... + 755667.

It is an arithmetic number, because the mean of its divisors is an integer number (520258368).

Almost surely, 2^9661934672 is an apocalyptic number.

It is an amenable number.

9661934672 is an abundant number, since it is smaller than the sum of its proper divisors (11148400048).

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

9661934672 is a wasteful number, since it uses less digits than its factorization.

9661934672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498491 (or 1498485 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 53.

The square root of 9661934672 is about 98295.1406326885. The cubic root of 9661934672 is about 2129.8778590868.

The spelling of 9661934672 in words is "nine billion, six hundred sixty-one million, nine hundred thirty-four thousand, six hundred seventy-two".