128673213625 has 32 divisors (see below), whose sum is σ = 175703194368. Its totient is φ = 93302496000.

The previous prime is 128673213611. The next prime is 128673213629. The reversal of 128673213625 is 526312376821.

It is not a de Polignac number, because 128673213625 - 2⁷ = 128673213497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128673213629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324532 + ... + 602218.

It is an arithmetic number, because the mean of its divisors is an integer number (5490724824).

Almost surely, 2^128673213625 is an apocalyptic number.

It is an amenable number.

128673213625 is a deficient number, since it is larger than the sum of its proper divisors (47029980743).

128673213625 is a wasteful number, since it uses less digits than its factorization.

128673213625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278050 (or 278040 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The spelling of 128673213625 in words is "one hundred twenty-eight billion, six hundred seventy-three million, two hundred thirteen thousand, six hundred twenty-five".