13644535453023 has 16 divisors (see below), whose sum is σ = 18200173026816. Its totient is φ = 9092627779200.

The previous prime is 13644535453001. The next prime is 13644535453049. The reversal of 13644535453023 is 32035453544631.

It is not a de Polignac number, because 13644535453023 - 2⁵ = 13644535452991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13644535453123) 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, 235112136 + ... + 235170162.

It is an arithmetic number, because the mean of its divisors is an integer number (1137510814176).

Almost surely, 2^{13644535453023} is an apocalyptic number.

13644535453023 is a deficient number, since it is larger than the sum of its proper divisors (4555637573793).

13644535453023 is a wasteful number, since it uses less digits than its factorization.

13644535453023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88814.

The product of its (nonzero) digits is 7776000, while the sum is 48.

Adding to 13644535453023 its reverse (32035453544631), we get a palindrome (45679988997654).

The spelling of 13644535453023 in words is "thirteen trillion, six hundred forty-four billion, five hundred thirty-five million, four hundred fifty-three thousand, twenty-three".