2660672394847 has 4 divisors (see below), whose sum is σ = 2662459281760. Its totient is φ = 2658885507936.

The previous prime is 2660672394829. The next prime is 2660672394859. The reversal of 2660672394847 is 7484932760662.

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 2660672394847 - 2²⁷ = 2660538177119 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 (2660672391847) 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, 893441223 + ... + 893444200.

It is an arithmetic number, because the mean of its divisors is an integer number (665614820440).

Almost surely, 2^{2660672394847} is an apocalyptic number.

2660672394847 is a deficient number, since it is larger than the sum of its proper divisors (1786886913).

2660672394847 is a wasteful number, since it uses less digits than its factorization.

2660672394847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786886912.

The product of its (nonzero) digits is 146313216, while the sum is 64.

The spelling of 2660672394847 in words is "two trillion, six hundred sixty billion, six hundred seventy-two million, three hundred ninety-four thousand, eight hundred forty-seven".