7978722213143 has 4 divisors (see below), whose sum is σ = 8704060596168. Its totient is φ = 7253383830120.

The previous prime is 7978722213113. The next prime is 7978722213223. The reversal of 7978722213143 is 3413122278797.

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 7978722213143 - 2¹⁰ = 7978722212119 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 (7978722213103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362669191496 + ... + 362669191517.

It is an arithmetic number, because the mean of its divisors is an integer number (2176015149042).

Almost surely, 2^{7978722213143} is an apocalyptic number.

7978722213143 is a deficient number, since it is larger than the sum of its proper divisors (725338383025).

7978722213143 is a wasteful number, since it uses less digits than its factorization.

7978722213143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725338383024.

The product of its digits is 7112448, while the sum is 56.

The spelling of 7978722213143 in words is "seven trillion, nine hundred seventy-eight billion, seven hundred twenty-two million, two hundred thirteen thousand, one hundred forty-three".