43243452145 has 16 divisors (see below), whose sum is σ = 53705847888. Its totient is φ = 33403023360.

The previous prime is 43243452137. The next prime is 43243452149. The reversal of 43243452145 is 54125434234.

It can be written as a sum of positive squares in 8 ways, for example, as 1277061696 + 41966390449 = 35736^2 + 204857^2 .

It is not a de Polignac number, because 43243452145 - 2³ = 43243452137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43243452149) 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, 1067454 + ... + 1107223.

It is an arithmetic number, because the mean of its divisors is an integer number (3356615493).

Almost surely, 2^43243452145 is an apocalyptic number.

It is an amenable number.

43243452145 is a deficient number, since it is larger than the sum of its proper divisors (10462395743).

43243452145 is a wasteful number, since it uses less digits than its factorization.

43243452145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174820.

The product of its digits is 230400, while the sum is 37.

Adding to 43243452145 its reverse (54125434234), we get a palindrome (97368886379).

The spelling of 43243452145 in words is "forty-three billion, two hundred forty-three million, four hundred fifty-two thousand, one hundred forty-five".