23440354430453 has 2 divisors, whose sum is σ = 23440354430454. Its totient is φ = 23440354430452.

The previous prime is 23440354430443. The next prime is 23440354430473. The reversal of 23440354430453 is 35403445304432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23424844966084 + 15509464369 = 4839922^2 + 124537^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23440354430453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23440354430443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11720177215226 + 11720177215227.

It is an arithmetic number, because the mean of its divisors is an integer number (11720177215227).

Almost surely, 2^{23440354430453} is an apocalyptic number.

It is an amenable number.

23440354430453 is a deficient number, since it is larger than the sum of its proper divisors (1).

23440354430453 is an equidigital number, since it uses as much as digits as its factorization.

23440354430453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4147200, while the sum is 44.

Adding to 23440354430453 its reverse (35403445304432), we get a palindrome (58843799734885).

The spelling of 23440354430453 in words is "twenty-three trillion, four hundred forty billion, three hundred fifty-four million, four hundred thirty thousand, four hundred fifty-three".