667216416745 has 16 divisors (see below), whose sum is σ = 813827340288. Its totient is φ = 524995611840.

The previous prime is 667216416743. The next prime is 667216416749. The reversal of 667216416745 is 547614612766.

It is not a de Polignac number, because 667216416745 - 2¹ = 667216416743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667216416743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7509772 + ... + 7598098.

It is an arithmetic number, because the mean of its divisors is an integer number (50864208768).

Almost surely, 2^667216416745 is an apocalyptic number.

It is an amenable number.

667216416745 is a deficient number, since it is larger than the sum of its proper divisors (146610923543).

667216416745 is a wasteful number, since it uses less digits than its factorization.

667216416745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113160.

The product of its digits is 10160640, while the sum is 55.

The spelling of 667216416745 in words is "six hundred sixty-seven billion, two hundred sixteen million, four hundred sixteen thousand, seven hundred forty-five".