2123654223433 has 4 divisors (see below), whose sum is σ = 2124007759360. Its totient is φ = 2123300687508.

The previous prime is 2123654223409. The next prime is 2123654223517. The reversal of 2123654223433 is 3343224563212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2123654223433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123654233433) 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, 176758953 + ... + 176770966.

It is an arithmetic number, because the mean of its divisors is an integer number (531001939840).

Almost surely, 2^{2123654223433} is an apocalyptic number.

It is an amenable number.

2123654223433 is a deficient number, since it is larger than the sum of its proper divisors (353535927).

2123654223433 is an equidigital number, since it uses as much as digits as its factorization.

2123654223433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353535926.

The product of its digits is 622080, while the sum is 40.

Adding to 2123654223433 its reverse (3343224563212), we get a palindrome (5466878786645).

The spelling of 2123654223433 in words is "two trillion, one hundred twenty-three billion, six hundred fifty-four million, two hundred twenty-three thousand, four hundred thirty-three".