66968886966 has 32 divisors (see below), whose sum is σ = 139812786528. Its totient is φ = 21363575040.

The previous prime is 66968886953. The next prime is 66968886991.

66968886966 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66968886891 and 66968886900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2459095 + ... + 2486178.

It is an arithmetic number, because the mean of its divisors is an integer number (4369149579).

Almost surely, 2^66968886966 is an apocalyptic number.

66968886966 is an abundant number, since it is smaller than the sum of its proper divisors (72843899562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66968886966 is a wasteful number, since it uses less digits than its factorization.

66968886966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4945376.

The product of its digits is 1934917632, while the sum is 78.

The spelling of 66968886966 in words is "sixty-six billion, nine hundred sixty-eight million, eight hundred eighty-six thousand, nine hundred sixty-six".