2146621205743 has 4 divisors (see below), whose sum is σ = 2453281378000. Its totient is φ = 1839961033488.

The previous prime is 2146621205711. The next prime is 2146621205747. The reversal of 2146621205743 is 3475021266412.

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 2146621205743 - 2⁵ = 2146621205711 is a prime.

It is a super-2 number, since 2×2146621205743² (a number of 25 digits) contains 22 as substring.

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 2146621205743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2146621205747) 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, 153330086118 + ... + 153330086131.

It is an arithmetic number, because the mean of its divisors is an integer number (613320344500).

Almost surely, 2^{2146621205743} is an apocalyptic number.

2146621205743 is a deficient number, since it is larger than the sum of its proper divisors (306660172257).

2146621205743 is an equidigital number, since it uses as much as digits as its factorization.

2146621205743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306660172256.

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 2146621205743 in words is "two trillion, one hundred forty-six billion, six hundred twenty-one million, two hundred five thousand, seven hundred forty-three".