66736700006667 has 8 divisors (see below), whose sum is σ = 88985568414720. Its totient is φ = 44489482468200.

The previous prime is 66736700006657. The next prime is 66736700006671. The reversal of 66736700006667 is 76660000763766.

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

It is not a de Polignac number, because 66736700006667 - 2⁸ = 66736700006411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66736700006667.

It is not an unprimeable number, because it can be changed into a prime (66736700006657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412623067 + ... + 412784772.

It is an arithmetic number, because the mean of its divisors is an integer number (11123196051840).

Almost surely, 2^{66736700006667} is an apocalyptic number.

66736700006667 is a deficient number, since it is larger than the sum of its proper divisors (22248868408053).

66736700006667 is a wasteful number, since it uses less digits than its factorization.

66736700006667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825434793.

The product of its (nonzero) digits is 48009024, while the sum is 60.

The spelling of 66736700006667 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred million, six thousand, six hundred sixty-seven".