43542564411021 has 16 divisors (see below), whose sum is σ = 62597177086080. Its totient is φ = 26763486897600.

The previous prime is 43542564410987. The next prime is 43542564411023. The reversal of 43542564411021 is 12011446524534.

It is not a de Polignac number, because 43542564411021 - 2²⁷ = 43542430193293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43542564411023) 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, 665328430 + ... + 665393871.

It is an arithmetic number, because the mean of its divisors is an integer number (3912323567880).

Almost surely, 2^{43542564411021} is an apocalyptic number.

It is an amenable number.

43542564411021 is a deficient number, since it is larger than the sum of its proper divisors (19054612675059).

43542564411021 is a wasteful number, since it uses less digits than its factorization.

43542564411021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330723156.

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 43542564411021 in words is "forty-three trillion, five hundred forty-two billion, five hundred sixty-four million, four hundred eleven thousand, twenty-one".