2666402634479 has 8 divisors (see below), whose sum is σ = 2826805235328. Its totient is φ = 2510649384480.

The previous prime is 2666402634463. The next prime is 2666402634491. The reversal of 2666402634479 is 9744362046662.

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

It is a cyclic number.

It is not a de Polignac number, because 2666402634479 - 2⁴ = 2666402634463 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 (2666002634479) 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, 1162336532 + ... + 1162338825.

It is an arithmetic number, because the mean of its divisors is an integer number (353350654416).

Almost surely, 2^{2666402634479} is an apocalyptic number.

2666402634479 is a deficient number, since it is larger than the sum of its proper divisors (160402600849).

2666402634479 is a wasteful number, since it uses less digits than its factorization.

2666402634479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324675425.

The product of its (nonzero) digits is 62705664, while the sum is 59.

The spelling of 2666402634479 in words is "two trillion, six hundred sixty-six billion, four hundred two million, six hundred thirty-four thousand, four hundred seventy-nine".