2164625242643 has 4 divisors (see below), whose sum is σ = 2167970877360. Its totient is φ = 2161279607928.

The previous prime is 2164625242627. The next prime is 2164625242657. The reversal of 2164625242643 is 3462425264612.

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 2164625242643 - 2⁴ = 2164625242627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2164625242613) 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, 1672816388 + ... + 1672817681.

It is an arithmetic number, because the mean of its divisors is an integer number (541992719340).

Almost surely, 2^{2164625242643} is an apocalyptic number.

2164625242643 is a deficient number, since it is larger than the sum of its proper divisors (3345634717).

2164625242643 is an equidigital number, since it uses as much as digits as its factorization.

2164625242643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345634716.

The product of its digits is 3317760, while the sum is 47.

The spelling of 2164625242643 in words is "two trillion, one hundred sixty-four billion, six hundred twenty-five million, two hundred forty-two thousand, six hundred forty-three".