66986468966 has 8 divisors (see below), whose sum is σ = 101474552304. Its totient is φ = 33161618200.

The previous prime is 66986468963. The next prime is 66986468981.

66986468966 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×66986468966² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66986468893 and 66986468902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66986468963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165807890 + ... + 165808293.

It is an arithmetic number, because the mean of its divisors is an integer number (12684319038).

Almost surely, 2^66986468966 is an apocalyptic number.

66986468966 is a deficient number, since it is larger than the sum of its proper divisors (34488083338).

66986468966 is a wasteful number, since it uses less digits than its factorization.

66986468966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331616286.

The product of its digits is 967458816, while the sum is 74.

The spelling of 66986468966 in words is "sixty-six billion, nine hundred eighty-six million, four hundred sixty-eight thousand, nine hundred sixty-six".