2124563206345 has 4 divisors (see below), whose sum is σ = 2549475847620. Its totient is φ = 1699650565072.

The previous prime is 2124563206319. The next prime is 2124563206393. The reversal of 2124563206345 is 5436023654212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 266082652224 + 1858480554121 = 515832^2 + 1363261^2 .

It is a cyclic number.

It is not a de Polignac number, because 2124563206345 - 2⁵ = 2124563206313 is a prime.

It is an unprimeable number.

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, 212456320630 + ... + 212456320639.

It is an arithmetic number, because the mean of its divisors is an integer number (637368961905).

Almost surely, 2^{2124563206345} is an apocalyptic number.

It is an amenable number.

2124563206345 is a deficient number, since it is larger than the sum of its proper divisors (424912641275).

2124563206345 is an equidigital number, since it uses as much as digits as its factorization.

2124563206345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424912641274.

The product of its (nonzero) digits is 1036800, while the sum is 43.

It can be divided in two parts, 212456 and 3206345, that added together give a 4-th power (3418801 = 43⁴).

The spelling of 2124563206345 in words is "two trillion, one hundred twenty-four billion, five hundred sixty-three million, two hundred six thousand, three hundred forty-five".