2128671677 has 32 divisors (see below), whose sum is σ = 2515339008. Its totient is φ = 1779840000.

The previous prime is 2128671653. The next prime is 2128671697. The reversal of 2128671677 is 7761768212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2128671677 - 2⁸ = 2128671421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128671607) 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, 2064152 + ... + 2065182.

It is an arithmetic number, because the mean of its divisors is an integer number (78604344).

Almost surely, 2^2128671677 is an apocalyptic number.

It is an amenable number.

2128671677 is a deficient number, since it is larger than the sum of its proper divisors (386667331).

2128671677 is a wasteful number, since it uses less digits than its factorization.

2128671677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301.

The product of its digits is 395136, while the sum is 47.

The square root of 2128671677 is about 46137.5300270832. The cubic root of 2128671677 is about 1286.3808332273.

The spelling of 2128671677 in words is "two billion, one hundred twenty-eight million, six hundred seventy-one thousand, six hundred seventy-seven".