45547394752161 has 27 divisors (see below), whose sum is σ = 69888898938963. Its totient is φ = 28578541527360.

The previous prime is 45547394752151. The next prime is 45547394752169. The reversal of 45547394752161 is 16125749374554.

The square root of 45547394752161 is 6748881.

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

45547394752161 is a `hidden beast` number, since 4 + 5 + 5 + 4 + 7 + 3 + 9 + 47 + 521 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 35460774461025 + 10086620291136 = 5954895^2 + 3175944^2 .

It is not a de Polignac number, because 45547394752161 - 2²³ = 45547386363553 is a prime.

It is a super-2 number, since 2×45547394752161² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45547394752169) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 344126766 + ... + 344259096.

Almost surely, 2^{45547394752161} is an apocalyptic number.

45547394752161 is the 6748881-st square number.

45547394752161 is the 3374441-st centered octagonal number.

It is an amenable number.

45547394752161 is a deficient number, since it is larger than the sum of its proper divisors (24341504186802).

45547394752161 is an frugal number, since it uses more digits than its factorization.

45547394752161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264702 (or 132351 counting only the distinct ones).

The product of its digits is 127008000, while the sum is 63.

The spelling of 45547394752161 in words is "forty-five trillion, five hundred forty-seven billion, three hundred ninety-four million, seven hundred fifty-two thousand, one hundred sixty-one".