47888308666 has 24 divisors (see below), whose sum is σ = 78967717920. Its totient is φ = 21764277480.

The previous prime is 47888308609. The next prime is 47888308669. The reversal of 47888308666 is 66680388874.

It is a junction number, because it is equal to n+sod(n) for n = 47888308598 and 47888308607.

It is not an unprimeable number, because it can be changed into a prime (47888308669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2885805 + ... + 2902351.

It is an arithmetic number, because the mean of its divisors is an integer number (3290321580).

Almost surely, 2^47888308666 is an apocalyptic number.

47888308666 is a deficient number, since it is larger than the sum of its proper divisors (31079409254).

47888308666 is a wasteful number, since it uses less digits than its factorization.

47888308666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28530 (or 28519 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 64.

The spelling of 47888308666 in words is "forty-seven billion, eight hundred eighty-eight million, three hundred eight thousand, six hundred sixty-six".