66914530856 has 16 divisors (see below), whose sum is σ = 125467526400. Its totient is φ = 33456523824.

The previous prime is 66914530831. The next prime is 66914530877. The reversal of 66914530856 is 65803541966.

It is a happy number.

66914530856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66914530798 and 66914530807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566585 + ... + 674423.

It is an arithmetic number, because the mean of its divisors is an integer number (7841720400).

Almost surely, 2^66914530856 is an apocalyptic number.

It is an amenable number.

66914530856 is a deficient number, since it is larger than the sum of its proper divisors (58552995544).

66914530856 is a wasteful number, since it uses less digits than its factorization.

66914530856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185408 (or 185404 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 66914530856 in words is "sixty-six billion, nine hundred fourteen million, five hundred thirty thousand, eight hundred fifty-six".