66962426968 has 8 divisors (see below), whose sum is σ = 125554550580. Its totient is φ = 33481213480.

The previous prime is 66962426963. The next prime is 66962427001. The reversal of 66962426968 is 86962426966.

66962426968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66962426963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4185151678 + ... + 4185151693.

Almost surely, 2^66962426968 is an apocalyptic number.

It is an amenable number.

66962426968 is a deficient number, since it is larger than the sum of its proper divisors (58592123612).

66962426968 is a wasteful number, since it uses less digits than its factorization.

66962426968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8370303377 (or 8370303373 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 64.

The spelling of 66962426968 in words is "sixty-six billion, nine hundred sixty-two million, four hundred twenty-six thousand, nine hundred sixty-eight".