128612607876 has 27 divisors (see below), whose sum is σ = 325109531383. Its totient is φ = 42870152040.

The previous prime is 128612607869. The next prime is 128612607889. The reversal of 128612607876 is 678706216821.

The square root of 128612607876 is 358626.

It is a perfect power (a square), and thus also a powerful number.

128612607876 is a `hidden beast` number, since 1 + 28 + 6 + 1 + 2 + 607 + 8 + 7 + 6 = 666.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2121871 + ... + 2181641.

Almost surely, 2^128612607876 is an apocalyptic number.

128612607876 is the 358626-th square number.

It is an amenable number.

128612607876 is an abundant number, since it is smaller than the sum of its proper divisors (196496923507).

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

128612607876 is an frugal number, since it uses more digits than its factorization.

128612607876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119552 (or 59776 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The spelling of 128612607876 in words is "one hundred twenty-eight billion, six hundred twelve million, six hundred seven thousand, eight hundred seventy-six".