47527781666 has 8 divisors (see below), whose sum is σ = 71436870864. Its totient is φ = 23715491380.

The previous prime is 47527781611. The next prime is 47527781669. The reversal of 47527781666 is 66618772574.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (47527781669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24198500 + ... + 24200463.

It is an arithmetic number, because the mean of its divisors is an integer number (8929608858).

Almost surely, 2^47527781666 is an apocalyptic number.

47527781666 is a deficient number, since it is larger than the sum of its proper divisors (23909089198).

47527781666 is a wasteful number, since it uses less digits than its factorization.

47527781666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48399456.

The product of its digits is 23708160, while the sum is 59.

The spelling of 47527781666 in words is "forty-seven billion, five hundred twenty-seven million, seven hundred eighty-one thousand, six hundred sixty-six".