6666769392919 has 4 divisors (see below), whose sum is σ = 6673185918880. Its totient is φ = 6660352866960.

The previous prime is 6666769392917. The next prime is 6666769392937. The reversal of 6666769392919 is 9192939676666.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6666769392919 - 2¹ = 6666769392917 is a prime.

It is a super-2 number, since 2×6666769392919² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666769392917) 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, 3208261422 + ... + 3208263499.

It is an arithmetic number, because the mean of its divisors is an integer number (1668296479720).

Almost surely, 2^{6666769392919} is an apocalyptic number.

6666769392919 is a deficient number, since it is larger than the sum of its proper divisors (6416525961).

6666769392919 is a wasteful number, since it uses less digits than its factorization.

6666769392919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6416525960.

The product of its digits is 2142770112, while the sum is 79.

The spelling of 6666769392919 in words is "six trillion, six hundred sixty-six billion, seven hundred sixty-nine million, three hundred ninety-two thousand, nine hundred nineteen".