667543003641 has 12 divisors (see below), whose sum is σ = 964255372080. Its totient is φ = 445016397240.

The previous prime is 667543003639. The next prime is 667543003651. The reversal of 667543003641 is 146300345766.

667543003641 is a `hidden beast` number, since 6 + 67 + 543 + 0 + 0 + 3 + 6 + 41 = 666.

It is not a de Polignac number, because 667543003641 - 2¹ = 667543003639 is a prime.

It is a super-2 number, since 2×667543003641² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667543003651) 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 11 ways as a sum of consecutive naturals, for example, 671811 + ... + 1336568.

It is an arithmetic number, because the mean of its divisors is an integer number (80354614340).

Almost surely, 2^667543003641 is an apocalyptic number.

It is an amenable number.

667543003641 is a deficient number, since it is larger than the sum of its proper divisors (296712368439).

667543003641 is a wasteful number, since it uses less digits than its factorization.

667543003641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045316 (or 2045313 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 667543003641 in words is "six hundred sixty-seven billion, five hundred forty-three million, three thousand, six hundred forty-one".