66078887066 has 16 divisors (see below), whose sum is σ = 99373560000. Its totient is φ = 32954463360.

The previous prime is 66078887053. The next prime is 66078887081.

66078887066 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1403195 + ... + 1449521.

It is an arithmetic number, because the mean of its divisors is an integer number (6210847500).

Almost surely, 2^66078887066 is an apocalyptic number.

66078887066 is a deficient number, since it is larger than the sum of its proper divisors (33294672934).

66078887066 is a wasteful number, since it uses less digits than its factorization.

66078887066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48149.

The product of its (nonzero) digits is 32514048, while the sum is 62.

The spelling of 66078887066 in words is "sixty-six billion, seventy-eight million, eight hundred eighty-seven thousand, sixty-six".