66468942836 has 12 divisors (see below), whose sum is σ = 116340721728. Its totient is φ = 33228736632.

The previous prime is 66468942823. The next prime is 66468942853. The reversal of 66468942836 is 63824986466.

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, 1407566 + ... + 1454021.

It is an arithmetic number, because the mean of its divisors is an integer number (9695060144).

Almost surely, 2^66468942836 is an apocalyptic number.

It is an amenable number.

66468942836 is a deficient number, since it is larger than the sum of its proper divisors (49871778892).

66468942836 is a wasteful number, since it uses less digits than its factorization.

66468942836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2867398 (or 2867396 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 62.

The spelling of 66468942836 in words is "sixty-six billion, four hundred sixty-eight million, nine hundred forty-two thousand, eight hundred thirty-six".