470539749681 has 27 divisors (see below), whose sum is σ = 685076294721. Its totient is φ = 311216854464.

The previous prime is 470539749643. The next prime is 470539749707. The reversal of 470539749681 is 186947935074.

The square root of 470539749681 is 685959.

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

470539749681 is a `hidden beast` number, since 4 + 7 + 0 + 53 + 97 + 496 + 8 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6893150625 + 463646599056 = 83025^2 + 680916^2 .

It is not a de Polignac number, because 470539749681 - 2¹¹ = 470539747633 is a prime.

It is a super-2 number, since 2×470539749681² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (470539747681) 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, 281928315 + ... + 281929983.

Almost surely, 2^470539749681 is an apocalyptic number.

470539749681 is the 685959-th square number.

470539749681 is the 342980-th centered octagonal number.

It is an amenable number.

470539749681 is a deficient number, since it is larger than the sum of its proper divisors (214536545040).

470539749681 is an frugal number, since it uses more digits than its factorization.

470539749681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3618 (or 1809 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 470539749681 in words is "four hundred seventy billion, five hundred thirty-nine million, seven hundred forty-nine thousand, six hundred eighty-one".