23540134165453 has 4 divisors (see below), whose sum is σ = 23540143872060. Its totient is φ = 23540124458848.

The previous prime is 23540134165399. The next prime is 23540134165469. The reversal of 23540134165453 is 35456143104532.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2128441730724 + 21411692434729 = 1458918^2 + 4627277^2 .

It is a cyclic number.

It is not a de Polignac number, because 23540134165453 - 2²¹ = 23540132068301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23540134115453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2246553 + ... + 7219921.

It is an arithmetic number, because the mean of its divisors is an integer number (5885035968015).

Almost surely, 2^{23540134165453} is an apocalyptic number.

It is an amenable number.

23540134165453 is a deficient number, since it is larger than the sum of its proper divisors (9706607).

23540134165453 is an equidigital number, since it uses as much as digits as its factorization.

23540134165453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9706606.

The product of its (nonzero) digits is 2592000, while the sum is 46.

Adding to 23540134165453 its reverse (35456143104532), we get a palindrome (58996277269985).

The spelling of 23540134165453 in words is "twenty-three trillion, five hundred forty billion, one hundred thirty-four million, one hundred sixty-five thousand, four hundred fifty-three".