66667034040 has 32 divisors (see below), whose sum is σ = 200001102480. Its totient is φ = 17777875712.

The previous prime is 66667034039. The next prime is 66667034069. The reversal of 66667034040 is 4043076666.

It is a junction number, because it is equal to n+sod(n) for n = 66667033983 and 66667034001.

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, 277779189 + ... + 277779428.

Almost surely, 2^66667034040 is an apocalyptic number.

66667034040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66667034040 is an abundant number, since it is smaller than the sum of its proper divisors (133334068440).

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

66667034040 is a wasteful number, since it uses less digits than its factorization.

66667034040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555558631 (or 555558627 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 42.

The spelling of 66667034040 in words is "sixty-six billion, six hundred sixty-seven million, thirty-four thousand, forty".