66450004554207 has 32 divisors (see below), whose sum is σ = 89467800993792. Its totient is φ = 43868084891904.

The previous prime is 66450004554191. The next prime is 66450004554209. The reversal of 66450004554207 is 70245540005466.

It is not a de Polignac number, because 66450004554207 - 2⁴ = 66450004554191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66450004554209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 749896498 + ... + 749985104.

It is an arithmetic number, because the mean of its divisors is an integer number (2795868781056).

Almost surely, 2^{66450004554207} is an apocalyptic number.

66450004554207 is a deficient number, since it is larger than the sum of its proper divisors (23017796439585).

66450004554207 is a wasteful number, since it uses less digits than its factorization.

66450004554207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94167.

The product of its (nonzero) digits is 4032000, while the sum is 48.

The spelling of 66450004554207 in words is "sixty-six trillion, four hundred fifty billion, four million, five hundred fifty-four thousand, two hundred seven".