16471657643841 has 27 divisors (see below), whose sum is σ = 25274591212611. Its totient is φ = 10335027864384.

The previous prime is 16471657643827. The next prime is 16471657643867. The reversal of 16471657643841 is 14834675617461.

The square root of 16471657643841 is 4058529.

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

16471657643841 is a `hidden beast` number, since 1 + 6 + 4 + 7 + 16 + 576 + 4 + 3 + 8 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12823954913025 + 3647702730816 = 3581055^2 + 1909896^2 .

It is not a de Polignac number, because 16471657643841 - 2⁵ = 16471657643809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16471657641841) 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, 206945190 + ... + 207024768.

Almost surely, 2^{16471657643841} is an apocalyptic number.

16471657643841 is the 4058529-th square number.

16471657643841 is the 2029265-th centered octagonal number.

It is an amenable number.

16471657643841 is a deficient number, since it is larger than the sum of its proper divisors (8802933568770).

16471657643841 is an frugal number, since it uses more digits than its factorization.

16471657643841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159198 (or 79599 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 63.

The spelling of 16471657643841 in words is "sixteen trillion, four hundred seventy-one billion, six hundred fifty-seven million, six hundred forty-three thousand, eight hundred forty-one".