8889725601664 has 64 divisors (see below), whose sum is σ = 19567059179040. Its totient is φ = 4001513291776.

The previous prime is 8889725601623. The next prime is 8889725601671. The reversal of 8889725601664 is 4661065279888.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 8889725601593 and 8889725601602.

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, 88761949 + ... + 88862044.

Almost surely, 2^{8889725601664} is an apocalyptic number.

It is an amenable number.

8889725601664 is an abundant number, since it is smaller than the sum of its proper divisors (10677333577376).

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

8889725601664 is a wasteful number, since it uses less digits than its factorization.

8889725601664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177624047 (or 177624035 counting only the distinct ones).

The product of its (nonzero) digits is 278691840, while the sum is 70.

The spelling of 8889725601664 in words is "eight trillion, eight hundred eighty-nine billion, seven hundred twenty-five million, six hundred one thousand, six hundred sixty-four".