123545551343453 has 2 divisors, whose sum is σ = 123545551343454. Its totient is φ = 123545551343452.

The previous prime is 123545551343441. The next prime is 123545551343477. The reversal of 123545551343453 is 354343155545321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72215018235364 + 51330533108089 = 8497942^2 + 7164533^2 .

It is an emirp because it is prime and its reverse (354343155545321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123545551343453 - 2¹⁴ = 123545551327069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123545551343395 and 123545551343404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123545551343153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61772775671726 + 61772775671727.

It is an arithmetic number, because the mean of its divisors is an integer number (61772775671727).

Almost surely, 2^{123545551343453} is an apocalyptic number.

It is an amenable number.

123545551343453 is a deficient number, since it is larger than the sum of its proper divisors (1).

123545551343453 is an equidigital number, since it uses as much as digits as its factorization.

123545551343453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400000, while the sum is 53.

The spelling of 123545551343453 in words is "one hundred twenty-three trillion, five hundred forty-five billion, five hundred fifty-one million, three hundred forty-three thousand, four hundred fifty-three".