23144402254445 has 4 divisors (see below), whose sum is σ = 27773282705340. Its totient is φ = 18515521803552.

The previous prime is 23144402254423. The next prime is 23144402254511. The reversal of 23144402254445 is 54445220444132.

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 14060917544521 + 9083484709924 = 3749789^2 + 3013882^2 .

It is a cyclic number.

It is not a de Polignac number, because 23144402254445 - 2²⁸ = 23144133818989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23144402254396 and 23144402254405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2314440225440 + ... + 2314440225449.

It is an arithmetic number, because the mean of its divisors is an integer number (6943320676335).

Almost surely, 2^{23144402254445} is an apocalyptic number.

It is an amenable number.

23144402254445 is a deficient number, since it is larger than the sum of its proper divisors (4628880450895).

23144402254445 is an equidigital number, since it uses as much as digits as its factorization.

23144402254445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628880450894.

The product of its (nonzero) digits is 2457600, while the sum is 44.

Adding to 23144402254445 its reverse (54445220444132), we get a palindrome (77589622698577).

The spelling of 23144402254445 in words is "twenty-three trillion, one hundred forty-four billion, four hundred two million, two hundred fifty-four thousand, four hundred forty-five".