2161313314143 has 4 divisors (see below), whose sum is σ = 2881751085528. Its totient is φ = 1440875542760.

The previous prime is 2161313314109. The next prime is 2161313314159. The reversal of 2161313314143 is 3414133131612.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2161313314143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161313314543) 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, 360218885688 + ... + 360218885693.

It is an arithmetic number, because the mean of its divisors is an integer number (720437771382).

Almost surely, 2^{2161313314143} is an apocalyptic number.

2161313314143 is a deficient number, since it is larger than the sum of its proper divisors (720437771385).

2161313314143 is an equidigital number, since it uses as much as digits as its factorization.

2161313314143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720437771384.

The product of its digits is 15552, while the sum is 33.

Adding to 2161313314143 its reverse (3414133131612), we get a palindrome (5575446445755).

The spelling of 2161313314143 in words is "two trillion, one hundred sixty-one billion, three hundred thirteen million, three hundred fourteen thousand, one hundred forty-three".