667707034040 has 32 divisors (see below), whose sum is σ = 1505628265680. Its totient is φ = 266498380032.

The previous prime is 667707034039. The next prime is 667707034061. The reversal of 667707034040 is 40430707766.

It is a junction number, because it is equal to n+sod(n) for n = 667707033982 and 667707034000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18245042 + ... + 18281601.

Almost surely, 2^667707034040 is an apocalyptic number.

It is an amenable number.

667707034040 is an abundant number, since it is smaller than the sum of its proper divisors (837921231640).

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

667707034040 is a wasteful number, since it uses less digits than its factorization.

667707034040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36527111 (or 36527107 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 44.

The spelling of 667707034040 in words is "six hundred sixty-seven billion, seven hundred seven million, thirty-four thousand, forty".