66988567948 has 12 divisors (see below), whose sum is σ = 118390687632. Its totient is φ = 33162657200.

The previous prime is 66988567937. The next prime is 66988567973. The reversal of 66988567948 is 84976588966.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82906240 + ... + 82907047.

It is an arithmetic number, because the mean of its divisors is an integer number (9865890636).

Almost surely, 2^66988567948 is an apocalyptic number.

It is an amenable number.

66988567948 is a deficient number, since it is larger than the sum of its proper divisors (51402119684).

66988567948 is a wasteful number, since it uses less digits than its factorization.

66988567948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165813392 (or 165813390 counting only the distinct ones).

The product of its digits is 1254113280, while the sum is 76.

The spelling of 66988567948 in words is "sixty-six billion, nine hundred eighty-eight million, five hundred sixty-seven thousand, nine hundred forty-eight".