2145423324001 has 4 divisors (see below), whose sum is σ = 2165106106900. Its totient is φ = 2125740541104.

The previous prime is 2145423323987. The next prime is 2145423324013. The reversal of 2145423324001 is 1004233245412.

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 569193293601 + 1576230030400 = 754449^2 + 1255480^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145423324001 - 2⁹ = 2145423323489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145423324101) 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, 9841391286 + ... + 9841391503.

It is an arithmetic number, because the mean of its divisors is an integer number (541276526725).

Almost surely, 2^{2145423324001} is an apocalyptic number.

It is an amenable number.

2145423324001 is a deficient number, since it is larger than the sum of its proper divisors (19682782899).

2145423324001 is a wasteful number, since it uses less digits than its factorization.

2145423324001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19682782898.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 2145423324001 its reverse (1004233245412), we get a palindrome (3149656569413).

The spelling of 2145423324001 in words is "two trillion, one hundred forty-five billion, four hundred twenty-three million, three hundred twenty-four thousand, one".