9644773072 has 40 divisors (see below), whose sum is σ = 21043153152. Its totient is φ = 4242566400.

The previous prime is 9644773069. The next prime is 9644773087. The reversal of 9644773072 is 2703774469.

It is a super-2 number, since 2×9644773072² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 878413 + ... + 889324.

Almost surely, 2^9644773072 is an apocalyptic number.

It is an amenable number.

9644773072 is an abundant number, since it is smaller than the sum of its proper divisors (11398380080).

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

9644773072 is a wasteful number, since it uses less digits than its factorization.

9644773072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767787 (or 1767781 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 49.

The square root of 9644773072 is about 98207.8055553631. The cubic root of 9644773072 is about 2128.6160767811.

The spelling of 9644773072 in words is "nine billion, six hundred forty-four million, seven hundred seventy-three thousand, seventy-two".