2145340234133 has 4 divisors (see below), whose sum is σ = 2145344044620. Its totient is φ = 2145336423648.

The previous prime is 2145340234129. The next prime is 2145340234181. The reversal of 2145340234133 is 3314320435412.

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 1226516380324 + 918823853809 = 1107482^2 + 958553^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145340234133 - 2² = 2145340234129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2145340234093 and 2145340234102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145340234733) 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, 875048 + ... + 2248641.

It is an arithmetic number, because the mean of its divisors is an integer number (536336011155).

Almost surely, 2^{2145340234133} is an apocalyptic number.

It is an amenable number.

2145340234133 is a deficient number, since it is larger than the sum of its proper divisors (3810487).

2145340234133 is an equidigital number, since it uses as much as digits as its factorization.

2145340234133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810486.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 2145340234133 its reverse (3314320435412), we get a palindrome (5459660669545).

The spelling of 2145340234133 in words is "two trillion, one hundred forty-five billion, three hundred forty million, two hundred thirty-four thousand, one hundred thirty-three".