65980662166 has 8 divisors (see below), whose sum is σ = 103274079984. Its totient is φ = 31555968840.

The previous prime is 65980662127. The next prime is 65980662193. The reversal of 65980662166 is 66126608956.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 717181065 + ... + 717181156.

It is an arithmetic number, because the mean of its divisors is an integer number (12909259998).

Almost surely, 2^65980662166 is an apocalyptic number.

65980662166 is a deficient number, since it is larger than the sum of its proper divisors (37293417818).

65980662166 is a wasteful number, since it uses less digits than its factorization.

65980662166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434362246.

The product of its (nonzero) digits is 5598720, while the sum is 55.

The spelling of 65980662166 in words is "sixty-five billion, nine hundred eighty million, six hundred sixty-two thousand, one hundred sixty-six".