23543400665153 has 4 divisors (see below), whose sum is σ = 23572077158868. Its totient is φ = 23514724171440.

The previous prime is 23543400665137. The next prime is 23543400665201. The reversal of 23543400665153 is 35156600434532.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2034323132209 + 21509077532944 = 1426297^2 + 4637788^2 .

It is a cyclic number.

It is not a de Polignac number, because 23543400665153 - 2⁴ = 23543400665137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23543400665098 and 23543400665107.

It is not an unprimeable number, because it can be changed into a prime (23543400665053) 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, 14338245626 + ... + 14338247267.

It is an arithmetic number, because the mean of its divisors is an integer number (5893019289717).

Almost surely, 2^{23543400665153} is an apocalyptic number.

It is an amenable number.

23543400665153 is a deficient number, since it is larger than the sum of its proper divisors (28676493715).

23543400665153 is an equidigital number, since it uses as much as digits as its factorization.

23543400665153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28676493714.

The product of its (nonzero) digits is 3888000, while the sum is 47.

The spelling of 23543400665153 in words is "twenty-three trillion, five hundred forty-three billion, four hundred million, six hundred sixty-five thousand, one hundred fifty-three".