128173002974776 has 8 divisors (see below), whose sum is σ = 240324380577720. Its totient is φ = 64086501487384.

The previous prime is 128173002974767. The next prime is 128173002974837. The reversal of 128173002974776 is 677479200371821.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8010812685916 + ... + 8010812685931.

It is an arithmetic number, because the mean of its divisors is an integer number (30040547572215).

Almost surely, 2^{128173002974776} is an apocalyptic number.

It is an amenable number.

128173002974776 is a deficient number, since it is larger than the sum of its proper divisors (112151377602944).

128173002974776 is a wasteful number, since it uses less digits than its factorization.

128173002974776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16021625371853 (or 16021625371849 counting only the distinct ones).

The product of its (nonzero) digits is 49787136, while the sum is 64.

The spelling of 128173002974776 in words is "one hundred twenty-eight trillion, one hundred seventy-three billion, two million, nine hundred seventy-four thousand, seven hundred seventy-six".