67790166679 has 4 divisors (see below), whose sum is σ = 69622333384. Its totient is φ = 65957999976.

The previous prime is 67790166667. The next prime is 67790166683. The reversal of 67790166679 is 97666109776.

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

It is not a de Polignac number, because 67790166679 - 2⁷ = 67790166551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67790166679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67790166779) 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, 916083297 + ... + 916083370.

It is an arithmetic number, because the mean of its divisors is an integer number (17405583346).

Almost surely, 2^67790166679 is an apocalyptic number.

67790166679 is a deficient number, since it is larger than the sum of its proper divisors (1832166705).

67790166679 is a wasteful number, since it uses less digits than its factorization.

67790166679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832166704.

The product of its (nonzero) digits is 36006768, while the sum is 64.

The spelling of 67790166679 in words is "sixty-seven billion, seven hundred ninety million, one hundred sixty-six thousand, six hundred seventy-nine".