66089346986 has 16 divisors (see below), whose sum is σ = 106978953984. Its totient is φ = 30440135664.

The previous prime is 66089346949. The next prime is 66089347001. The reversal of 66089346986 is 68964398066.

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, 2597090 + ... + 2622413.

It is an arithmetic number, because the mean of its divisors is an integer number (6686184624).

Almost surely, 2^66089346986 is an apocalyptic number.

66089346986 is a deficient number, since it is larger than the sum of its proper divisors (40889606998).

66089346986 is a wasteful number, since it uses less digits than its factorization.

66089346986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5220005.

The product of its (nonzero) digits is 80621568, while the sum is 65.

The spelling of 66089346986 in words is "sixty-six billion, eighty-nine million, three hundred forty-six thousand, nine hundred eighty-six".