2145444403436 has 12 divisors (see below), whose sum is σ = 3754555580160. Its totient is φ = 1072714237680.

The previous prime is 2145444403393. The next prime is 2145444403447. The reversal of 2145444403436 is 6343044445412.

It is an unprimeable number.

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, 1362860 + ... + 2479571.

It is an arithmetic number, because the mean of its divisors is an integer number (312879631680).

Almost surely, 2^{2145444403436} is an apocalyptic number.

It is an amenable number.

2145444403436 is a deficient number, since it is larger than the sum of its proper divisors (1609111176724).

2145444403436 is a wasteful number, since it uses less digits than its factorization.

2145444403436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3982024 (or 3982022 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 44.

Adding to 2145444403436 its reverse (6343044445412), we get a palindrome (8488488848848).

The spelling of 2145444403436 in words is "two trillion, one hundred forty-five billion, four hundred forty-four million, four hundred three thousand, four hundred thirty-six".