66624806976 has 112 divisors (see below), whose sum is σ = 216957761664. Its totient is φ = 17571373056.

The previous prime is 66624806957. The next prime is 66624806977. The reversal of 66624806976 is 67960842666.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (66624806977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1889145 + ... + 1924088.

It is an arithmetic number, because the mean of its divisors is an integer number (1937122872).

Almost surely, 2^66624806976 is an apocalyptic number.

It is an amenable number.

66624806976 is an abundant number, since it is smaller than the sum of its proper divisors (150332954688).

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

66624806976 is a wasteful number, since it uses less digits than its factorization.

66624806976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813268 (or 3813258 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 60.

The spelling of 66624806976 in words is "sixty-six billion, six hundred twenty-four million, eight hundred six thousand, nine hundred seventy-six".