66289134986 has 4 divisors (see below), whose sum is σ = 99433702482. Its totient is φ = 33144567492.

The previous prime is 66289134973. The next prime is 66289135001. The reversal of 66289134986 is 68943198266.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 58114262761 + 8174872225 = 241069^2 + 90415^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16572283745 + ... + 16572283748.

Almost surely, 2^66289134986 is an apocalyptic number.

66289134986 is a deficient number, since it is larger than the sum of its proper divisors (33144567496).

66289134986 is a wasteful number, since it uses less digits than its factorization.

66289134986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33144567495.

The product of its digits is 26873856, while the sum is 62.

The spelling of 66289134986 in words is "sixty-six billion, two hundred eighty-nine million, one hundred thirty-four thousand, nine hundred eighty-six".