66949381182351 has 8 divisors (see below), whose sum is σ = 89266112700160. Its totient is φ = 44632785226392.

The previous prime is 66949381182319. The next prime is 66949381182367. The reversal of 66949381182351 is 15328118394966.

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

It is not a de Polignac number, because 66949381182351 - 2⁵ = 66949381182319 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 (66949381182391) 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, 32732455 + ... + 34717608.

It is an arithmetic number, because the mean of its divisors is an integer number (11158264087520).

Almost surely, 2^{66949381182351} is an apocalyptic number.

66949381182351 is a deficient number, since it is larger than the sum of its proper divisors (22316731517809).

66949381182351 is a wasteful number, since it uses less digits than its factorization.

66949381182351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67780925.

The product of its digits is 67184640, while the sum is 66.

The spelling of 66949381182351 in words is "sixty-six trillion, nine hundred forty-nine billion, three hundred eighty-one million, one hundred eighty-two thousand, three hundred fifty-one".