123155225412559 has 2 divisors, whose sum is σ = 123155225412560. Its totient is φ = 123155225412558.

The previous prime is 123155225412529. The next prime is 123155225412581. The reversal of 123155225412559 is 955214522551321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123155225412559 - 2²¹ = 123155223315407 is a prime.

It is a super-3 number, since 3×123155225412559³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123155225412529) 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, 61577612706279 + 61577612706280.

It is an arithmetic number, because the mean of its divisors is an integer number (61577612706280).

Almost surely, 2^{123155225412559} is an apocalyptic number.

123155225412559 is a deficient number, since it is larger than the sum of its proper divisors (1).

123155225412559 is an equidigital number, since it uses as much as digits as its factorization.

123155225412559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400000, while the sum is 52.

The spelling of 123155225412559 in words is "one hundred twenty-three trillion, one hundred fifty-five billion, two hundred twenty-five million, four hundred twelve thousand, five hundred fifty-nine".