43457872145 has 16 divisors (see below), whose sum is σ = 53596853760. Its totient is φ = 33802691904.

The previous prime is 43457872111. The next prime is 43457872147. The reversal of 43457872145 is 54127875434.

It is a cyclic number.

It is not a de Polignac number, because 43457872145 - 2¹⁴ = 43457855761 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43457872093 and 43457872102.

It is not an unprimeable number, because it can be changed into a prime (43457872147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180716 + ... + 345794.

It is an arithmetic number, because the mean of its divisors is an integer number (3349803360).

Almost surely, 2^43457872145 is an apocalyptic number.

It is an amenable number.

43457872145 is a deficient number, since it is larger than the sum of its proper divisors (10138981615).

43457872145 is a wasteful number, since it uses less digits than its factorization.

43457872145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166544.

The product of its digits is 3763200, while the sum is 50.

The spelling of 43457872145 in words is "forty-three billion, four hundred fifty-seven million, eight hundred seventy-two thousand, one hundred forty-five".