66334268507 has 8 divisors (see below), whose sum is σ = 71484966336. Its totient is φ = 61190436672.

The previous prime is 66334268417. The next prime is 66334268509. The reversal of 66334268507 is 70586243366.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66334268507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66334268509) 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, 1696418 + ... + 1735079.

It is an arithmetic number, because the mean of its divisors is an integer number (8935620792).

Almost surely, 2^66334268507 is an apocalyptic number.

66334268507 is a deficient number, since it is larger than the sum of its proper divisors (5150697829).

66334268507 is a wasteful number, since it uses less digits than its factorization.

66334268507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432997.

The product of its (nonzero) digits is 4354560, while the sum is 50.

The spelling of 66334268507 in words is "sixty-six billion, three hundred thirty-four million, two hundred sixty-eight thousand, five hundred seven".