12001535534563 has 16 divisors (see below), whose sum is σ = 12729999427200. Its totient is φ = 11282757071040.

The previous prime is 12001535534537. The next prime is 12001535534567. The reversal of 12001535534563 is 36543553510021.

12001535534563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12001535534563 - 2²⁹ = 12000998663651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001535534567) 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, 161232568 + ... + 161306986.

It is an arithmetic number, because the mean of its divisors is an integer number (795624964200).

Almost surely, 2^{12001535534563} is an apocalyptic number.

12001535534563 is a deficient number, since it is larger than the sum of its proper divisors (728463892637).

12001535534563 is a wasteful number, since it uses less digits than its factorization.

12001535534563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139362.

The product of its (nonzero) digits is 810000, while the sum is 43.

The spelling of 12001535534563 in words is "twelve trillion, one billion, five hundred thirty-five million, five hundred thirty-four thousand, five hundred sixty-three".