43542252012523 has 16 divisors (see below), whose sum is σ = 48153245294592. Its totient is φ = 39040069608000.

The previous prime is 43542252012437. The next prime is 43542252012577. The reversal of 43542252012523 is 32521025224534.

It is a cyclic number.

It is not a de Polignac number, because 43542252012523 - 2³⁷ = 43404813059051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43542252012323) 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, 19388778 + ... + 21517648.

It is an arithmetic number, because the mean of its divisors is an integer number (3009577830912).

Almost surely, 2^{43542252012523} is an apocalyptic number.

43542252012523 is a deficient number, since it is larger than the sum of its proper divisors (4610993282069).

43542252012523 is a wasteful number, since it uses less digits than its factorization.

43542252012523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154426.

The product of its (nonzero) digits is 576000, while the sum is 40.

The spelling of 43542252012523 in words is "forty-three trillion, five hundred forty-two billion, two hundred fifty-two million, twelve thousand, five hundred twenty-three".