2145354242233 has 4 divisors (see below), whose sum is σ = 2145453306148. Its totient is φ = 2145255178320.

The previous prime is 2145354242201. The next prime is 2145354242261. The reversal of 2145354242233 is 3322424535412.

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 244008336784 + 1901345905449 = 493972^2 + 1378893^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145354242233 - 2⁵ = 2145354242201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145354242033) 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, 49499466 + ... + 49542787.

It is an arithmetic number, because the mean of its divisors is an integer number (536363326537).

Almost surely, 2^{2145354242233} is an apocalyptic number.

It is an amenable number.

2145354242233 is a deficient number, since it is larger than the sum of its proper divisors (99063915).

2145354242233 is an equidigital number, since it uses as much as digits as its factorization.

2145354242233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99063914.

The product of its digits is 691200, while the sum is 40.

Adding to 2145354242233 its reverse (3322424535412), we get a palindrome (5467778777645).

The spelling of 2145354242233 in words is "two trillion, one hundred forty-five billion, three hundred fifty-four million, two hundred forty-two thousand, two hundred thirty-three".