66703674040 has 16 divisors (see below), whose sum is σ = 150083266680. Its totient is φ = 26681469600.

The previous prime is 66703674013. The next prime is 66703674047. The reversal of 66703674040 is 4047630766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66703674047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833795886 + ... + 833795965.

Almost surely, 2^66703674040 is an apocalyptic number.

It is an amenable number.

66703674040 is an abundant number, since it is smaller than the sum of its proper divisors (83379592640).

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

66703674040 is a wasteful number, since it uses less digits than its factorization.

66703674040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667591862 (or 1667591858 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 66703674040 in words is "sixty-six billion, seven hundred three million, six hundred seventy-four thousand, forty".