472743537481666 has 24 divisors (see below), whose sum is σ = 779539445193852. Its totient is φ = 214856228268000.

The previous prime is 472743537481541. The next prime is 472743537481681. The reversal of 472743537481666 is 666184735347274.

It can be written as a sum of positive squares in 2 ways, for example, as 447291663831441 + 25451873650225 = 21149271^2 + 5044985^2 .

It is a super-2 number, since 2×472743537481666² (a number of 30 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 121710645 + ... + 125534728.

Almost surely, 2^{472743537481666} is an apocalyptic number.

472743537481666 is a deficient number, since it is larger than the sum of its proper divisors (306795907712186).

472743537481666 is a wasteful number, since it uses less digits than its factorization.

472743537481666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247253298 (or 247253287 counting only the distinct ones).

The product of its digits is 3413975040, while the sum is 73.

The spelling of 472743537481666 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-six".