23440001603453 has 4 divisors (see below), whose sum is σ = 23523417979548. Its totient is φ = 23356585227360.

The previous prime is 23440001603407. The next prime is 23440001603587. The reversal of 23440001603453 is 35430610004432.

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 13422858893284 + 10017142710169 = 3663722^2 + 3164987^2 .

It is a cyclic number.

It is not a de Polignac number, because 23440001603453 - 2¹⁰ = 23440001602429 is a prime.

It is a super-2 number, since 2×23440001603453² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23440001602453) 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, 41708187626 + ... + 41708188187.

It is an arithmetic number, because the mean of its divisors is an integer number (5880854494887).

Almost surely, 2^{23440001603453} is an apocalyptic number.

It is an amenable number.

23440001603453 is a deficient number, since it is larger than the sum of its proper divisors (83416376095).

23440001603453 is an equidigital number, since it uses as much as digits as its factorization.

23440001603453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83416376094.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 23440001603453 its reverse (35430610004432), we get a palindrome (58870611607885).

The spelling of 23440001603453 in words is "twenty-three trillion, four hundred forty billion, one million, six hundred three thousand, four hundred fifty-three".