47748561666 has 32 divisors (see below), whose sum is σ = 104529018048. Its totient is φ = 14451013440.

The previous prime is 47748561599. The next prime is 47748561689. The reversal of 47748561666 is 66616584774.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5012956 + ... + 5022471.

It is an arithmetic number, because the mean of its divisors is an integer number (3266531814).

Almost surely, 2^47748561666 is an apocalyptic number.

47748561666 is an abundant number, since it is smaller than the sum of its proper divisors (56780456382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47748561666 is a wasteful number, since it uses less digits than its factorization.

47748561666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10035506.

The product of its digits is 40642560, while the sum is 60.

The spelling of 47748561666 in words is "forty-seven billion, seven hundred forty-eight million, five hundred sixty-one thousand, six hundred sixty-six".