10128812164 has 9 divisors (see below), whose sum is σ = 17725773541. Its totient is φ = 5064305440.

The previous prime is 10128812149. The next prime is 10128812191. The reversal of 10128812164 is 46121882101.

It is a happy number.

The square root of 10128812164 is 100642.

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

It can be written as a sum of positive squares in only one way, i.e., 7099410564 + 3029401600 = 84258^2 + 55040^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 176124 + ... + 226444.

Almost surely, 2^10128812164 is an apocalyptic number.

10128812164 is the 100642-nd square number.

It is an amenable number.

10128812164 is a deficient number, since it is larger than the sum of its proper divisors (7596961377).

10128812164 is an frugal number, since it uses more digits than its factorization.

10128812164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100646 (or 50323 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 34.

The spelling of 10128812164 in words is "ten billion, one hundred twenty-eight million, eight hundred twelve thousand, one hundred sixty-four".