43164633121 has 9 divisors (see below), whose sum is σ = 43358508921. Its totient is φ = 42971623152.

The previous prime is 43164633059. The next prime is 43164633199. The reversal of 43164633121 is 12133646134.

The square root of 43164633121 is 207761.

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

It can be written as a sum of positive squares in 4 ways, for example, as 7865738721 + 35298894400 = 88689^2 + 187880^2 .

It is a de Polignac number, because none of the positive numbers 2^k-43164633121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43164633221) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 77494575 + ... + 77495131.

Almost surely, 2^43164633121 is an apocalyptic number.

43164633121 is the 207761-st square number.

43164633121 is the 103881-st centered octagonal number.

It is an amenable number.

43164633121 is a deficient number, since it is larger than the sum of its proper divisors (193875800).

43164633121 is an frugal number, since it uses more digits than its factorization.

43164633121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860 (or 930 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The spelling of 43164633121 in words is "forty-three billion, one hundred sixty-four million, six hundred thirty-three thousand, one hundred twenty-one".