472743537481665 has 48 divisors (see below), whose sum is σ = 819627107270400. Its totient is φ = 252066824989056.

The previous prime is 472743537481541. The next prime is 472743537481681. The reversal of 472743537481665 is 566184735347274.

It is a happy number.

472743537481665 is a `hidden beast` number, since 4 + 7 + 2 + 7 + 4 + 3 + 537 + 4 + 81 + 6 + 6 + 5 = 666.

It is not a de Polignac number, because 472743537481665 - 2²⁰ = 472743536433089 is a prime.

It is a super-2 number, since 2×472743537481665² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 472743537481593 and 472743537481602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3285630196 + ... + 3285774074.

It is an arithmetic number, because the mean of its divisors is an integer number (17075564734800).

Almost surely, 2^{472743537481665} is an apocalyptic number.

472743537481665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

472743537481665 is a deficient number, since it is larger than the sum of its proper divisors (346883569788735).

472743537481665 is a wasteful number, since it uses less digits than its factorization.

472743537481665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161646 (or 161643 counting only the distinct ones).

The product of its digits is 2844979200, while the sum is 72.

The spelling of 472743537481665 in words is "four hundred seventy-two trillion, seven hundred forty-three billion, five hundred thirty-seven million, four hundred eighty-one thousand, six hundred sixty-five".