66736700006668 has 6 divisors (see below), whose sum is σ = 116789225011676. Its totient is φ = 33368350003332.

The previous prime is 66736700006657. The next prime is 66736700006671. The reversal of 66736700006668 is 86660000763766.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 8342087500830 + ... + 8342087500837.

Almost surely, 2^{66736700006668} is an apocalyptic number.

It is an amenable number.

66736700006668 is a deficient number, since it is larger than the sum of its proper divisors (50052525005008).

66736700006668 is a wasteful number, since it uses less digits than its factorization.

66736700006668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16684175001671 (or 16684175001669 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 61.

The spelling of 66736700006668 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred million, six thousand, six hundred sixty-eight".