13644535453001 has 2 divisors, whose sum is σ = 13644535453002. Its totient is φ = 13644535453000.

The previous prime is 13644535452997. The next prime is 13644535453049. The reversal of 13644535453001 is 10035453544631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13644490884025 + 44568976 = 3693845^2 + 6676^2 .

It is a cyclic number.

It is not a de Polignac number, because 13644535453001 - 2² = 13644535452997 is a prime.

It is not a weakly prime, because it can be changed into another prime (13644535452001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6822267726500 + 6822267726501.

It is an arithmetic number, because the mean of its divisors is an integer number (6822267726501).

Almost surely, 2^{13644535453001} is an apocalyptic number.

It is an amenable number.

13644535453001 is a deficient number, since it is larger than the sum of its proper divisors (1).

13644535453001 is an equidigital number, since it uses as much as digits as its factorization.

13644535453001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296000, while the sum is 44.

Adding to 13644535453001 its reverse (10035453544631), we get a palindrome (23679988997632).

The spelling of 13644535453001 in words is "thirteen trillion, six hundred forty-four billion, five hundred thirty-five million, four hundred fifty-three thousand, one".