667736137745027 has 8 divisors (see below), whose sum is σ = 729228631471200. Its totient is φ = 607690526224320.

The previous prime is 667736137745021. The next prime is 667736137745051. The reversal of 667736137745027 is 720547731637766.

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

It is a cyclic number.

It is not a de Polignac number, because 667736137745027 - 2³² = 667731842777731 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (71).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667736137745021) 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, 361720550402 + ... + 361720552247.

It is an arithmetic number, because the mean of its divisors is an integer number (91153578933900).

Almost surely, 2^{667736137745027} is an apocalyptic number.

667736137745027 is a deficient number, since it is larger than the sum of its proper divisors (61492493726173).

667736137745027 is a wasteful number, since it uses less digits than its factorization.

667736137745027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723441102733.

The product of its (nonzero) digits is 1306912320, while the sum is 71.

The spelling of 667736137745027 in words is "six hundred sixty-seven trillion, seven hundred thirty-six billion, one hundred thirty-seven million, seven hundred forty-five thousand, twenty-seven".