66773670007 has 8 divisors (see below), whose sum is σ = 72877036032. Its totient is φ = 60675809400.

The previous prime is 66773669999. The next prime is 66773670013. The reversal of 66773670007 is 70007637766.

It is a happy number.

66773670007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66773670007 - 2³ = 66773669999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66773670407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1350969 + ... + 1399522.

It is an arithmetic number, because the mean of its divisors is an integer number (9109629504).

Almost surely, 2^66773670007 is an apocalyptic number.

66773670007 is a deficient number, since it is larger than the sum of its proper divisors (6103366025).

66773670007 is a wasteful number, since it uses less digits than its factorization.

66773670007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752709.

The product of its (nonzero) digits is 1555848, while the sum is 49.

The spelling of 66773670007 in words is "sixty-six billion, seven hundred seventy-three million, six hundred seventy thousand, seven".