8961644888160 has 96 divisors (see below), whose sum is σ = 28707642190080. Its totient is φ = 2349267353088.

The previous prime is 8961644888099. The next prime is 8961644888249. The reversal of 8961644888160 is 618884461698.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×8961644888160² (a number of 27 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 15 ways as a sum of consecutive naturals, for example, 158192812 + ... + 158249451.

It is an arithmetic number, because the mean of its divisors is an integer number (299037939480).

Almost surely, 2^{8961644888160} is an apocalyptic number.

8961644888160 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8961644888160 is an abundant number, since it is smaller than the sum of its proper divisors (19745997301920).

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

8961644888160 is a wasteful number, since it uses less digits than its factorization.

8961644888160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316442340 (or 316442332 counting only the distinct ones).

The product of its (nonzero) digits is 127401984, while the sum is 69.

The spelling of 8961644888160 in words is "eight trillion, nine hundred sixty-one billion, six hundred forty-four million, eight hundred eighty-eight thousand, one hundred sixty".