667233126772 has 24 divisors (see below), whose sum is σ = 1231637570240. Its totient is φ = 315408790080.

The previous prime is 667233126751. The next prime is 667233126811. The reversal of 667233126772 is 277621332766.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8976729 + ... + 9050752.

Almost surely, 2^667233126772 is an apocalyptic number.

It is an amenable number.

667233126772 is a deficient number, since it is larger than the sum of its proper divisors (564404443468).

667233126772 is a wasteful number, since it uses less digits than its factorization.

667233126772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18027991 (or 18027989 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 52.

The spelling of 667233126772 in words is "six hundred sixty-seven billion, two hundred thirty-three million, one hundred twenty-six thousand, seven hundred seventy-two".