43545215351121 has 16 divisors (see below), whose sum is σ = 63339642266880. Its totient is φ = 26390561602320.

The previous prime is 43545215351069. The next prime is 43545215351123. The reversal of 43545215351121 is 12115351254534.

It is not a de Polignac number, because 43545215351121 - 2²⁵ = 43545181796689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43545215351123) 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, 10096255 + ... + 13748628.

It is an arithmetic number, because the mean of its divisors is an integer number (3958727641680).

Almost surely, 2^{43545215351121} is an apocalyptic number.

It is an amenable number.

43545215351121 is a deficient number, since it is larger than the sum of its proper divisors (19794426915759).

43545215351121 is a wasteful number, since it uses less digits than its factorization.

43545215351121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23900236.

The product of its digits is 360000, while the sum is 42.

The spelling of 43545215351121 in words is "forty-three trillion, five hundred forty-five billion, two hundred fifteen million, three hundred fifty-one thousand, one hundred twenty-one".