1545223450443 has 16 divisors (see below), whose sum is σ = 2070719078400. Its totient is φ = 1024943673024.

The previous prime is 1545223450439. The next prime is 1545223450499. The reversal of 1545223450443 is 3440543225451.

It is not a de Polignac number, because 1545223450443 - 2² = 1545223450439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1545223450395 and 1545223450404.

It is not an unprimeable number, because it can be changed into a prime (1545223450543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 513958 + ... + 1831556.

It is an arithmetic number, because the mean of its divisors is an integer number (129419942400).

Almost surely, 2^{1545223450443} is an apocalyptic number.

1545223450443 is a deficient number, since it is larger than the sum of its proper divisors (525495627957).

1545223450443 is a wasteful number, since it uses less digits than its factorization.

1545223450443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319578.

The product of its (nonzero) digits is 1152000, while the sum is 42.

Adding to 1545223450443 its reverse (3440543225451), we get a palindrome (4985766675894).

The spelling of 1545223450443 in words is "one trillion, five hundred forty-five billion, two hundred twenty-three million, four hundred fifty thousand, four hundred forty-three".