667703455641 has 24 divisors (see below), whose sum is σ = 1036822101120. Its totient is φ = 412734941856.

The previous prime is 667703455613. The next prime is 667703455669. The reversal of 667703455641 is 146554307766.

667703455641 is a `hidden beast` number, since 6 + 6 + 7 + 70 + 3 + 4 + 5 + 564 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (667703455613) and next prime (667703455669).

It is not a de Polignac number, because 667703455641 - 2²³ = 667695067033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667703455241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41531310 + ... + 41547383.

It is an arithmetic number, because the mean of its divisors is an integer number (43200920880).

Almost surely, 2^667703455641 is an apocalyptic number.

It is an amenable number.

667703455641 is a deficient number, since it is larger than the sum of its proper divisors (369118645479).

667703455641 is a wasteful number, since it uses less digits than its factorization.

667703455641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83078765 (or 83078762 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 54.

The spelling of 667703455641 in words is "six hundred sixty-seven billion, seven hundred three million, four hundred fifty-five thousand, six hundred forty-one".