2145232603171 has 4 divisors (see below), whose sum is σ = 2451694403632. Its totient is φ = 1838770802712.

The previous prime is 2145232603169. The next prime is 2145232603177. The reversal of 2145232603171 is 1713062325412.

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

It is a cyclic number.

It is not a de Polignac number, because 2145232603171 - 2¹ = 2145232603169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2145232603171.

It is not an unprimeable number, because it can be changed into a prime (2145232603177) by changing a digit.

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, 153230900220 + ... + 153230900233.

It is an arithmetic number, because the mean of its divisors is an integer number (612923600908).

Almost surely, 2^{2145232603171} is an apocalyptic number.

2145232603171 is a deficient number, since it is larger than the sum of its proper divisors (306461800461).

2145232603171 is an equidigital number, since it uses as much as digits as its factorization.

2145232603171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306461800460.

The product of its (nonzero) digits is 60480, while the sum is 37.

Adding to 2145232603171 its reverse (1713062325412), we get a palindrome (3858294928583).

The spelling of 2145232603171 in words is "two trillion, one hundred forty-five billion, two hundred thirty-two million, six hundred three thousand, one hundred seventy-one".