667233126641 has 32 divisors (see below), whose sum is σ = 705641683968. Its totient is φ = 630352558080.

The previous prime is 667233126569. The next prime is 667233126649. The reversal of 667233126641 is 146621332766.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667233126641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667233126649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33363341 + ... + 33383333.

It is an arithmetic number, because the mean of its divisors is an integer number (22051302624).

Almost surely, 2^667233126641 is an apocalyptic number.

It is an amenable number.

667233126641 is a deficient number, since it is larger than the sum of its proper divisors (38408557327).

667233126641 is a wasteful number, since it uses less digits than its factorization.

667233126641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20321.

The product of its digits is 1306368, while the sum is 47.

The spelling of 667233126641 in words is "six hundred sixty-seven billion, two hundred thirty-three million, one hundred twenty-six thousand, six hundred forty-one".