123544553032489 has 2 divisors, whose sum is σ = 123544553032490. Its totient is φ = 123544553032488.

The previous prime is 123544553032429. The next prime is 123544553032517. The reversal of 123544553032489 is 984230355445321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117671879342889 + 5872673689600 = 10847667^2 + 2423360^2 .

It is a cyclic number.

It is not a de Polignac number, because 123544553032489 - 2²³ = 123544544643881 is a prime.

It is not a weakly prime, because it can be changed into another prime (123544553032429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61772276516244 + 61772276516245.

It is an arithmetic number, because the mean of its divisors is an integer number (61772276516245).

Almost surely, 2^{123544553032489} is an apocalyptic number.

It is an amenable number.

123544553032489 is a deficient number, since it is larger than the sum of its proper divisors (1).

123544553032489 is an equidigital number, since it uses as much as digits as its factorization.

123544553032489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208000, while the sum is 58.

The spelling of 123544553032489 in words is "one hundred twenty-three trillion, five hundred forty-four billion, five hundred fifty-three million, thirty-two thousand, four hundred eighty-nine".