667233126736 has 80 divisors (see below), whose sum is σ = 1426631814720. Its totient is φ = 299775421440.

The previous prime is 667233126733. The next prime is 667233126743. The reversal of 667233126736 is 637621332766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667233126733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60723835 + ... + 60734821.

It is an arithmetic number, because the mean of its divisors is an integer number (17832897684).

Almost surely, 2^667233126736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667233126736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713315907360).

667233126736 is an abundant number, since it is smaller than the sum of its proper divisors (759398687984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667233126736 is a wasteful number, since it uses less digits than its factorization.

667233126736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14972 (or 14966 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 52.

The spelling of 667233126736 in words is "six hundred sixty-seven billion, two hundred thirty-three million, one hundred twenty-six thousand, seven hundred thirty-six".