2145234023533 has 2 divisors, whose sum is σ = 2145234023534. Its totient is φ = 2145234023532.

The previous prime is 2145234023489. The next prime is 2145234023539. The reversal of 2145234023533 is 3353204325412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1447252308324 + 697981715209 = 1203018^2 + 835453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2145234023533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145234023492 and 2145234023501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2145234023539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072617011766 + 1072617011767.

It is an arithmetic number, because the mean of its divisors is an integer number (1072617011767).

Almost surely, 2^{2145234023533} is an apocalyptic number.

It is an amenable number.

2145234023533 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145234023533 is an equidigital number, since it uses as much as digits as its factorization.

2145234023533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 37.

Adding to 2145234023533 its reverse (3353204325412), we get a palindrome (5498438348945).

The spelling of 2145234023533 in words is "two trillion, one hundred forty-five billion, two hundred thirty-four million, twenty-three thousand, five hundred thirty-three".