123545551343741 has 2 divisors, whose sum is σ = 123545551343742. Its totient is φ = 123545551343740.

The previous prime is 123545551343701. The next prime is 123545551343759. The reversal of 123545551343741 is 147343155545321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123378311241241 + 167240102500 = 11107579^2 + 408950^2 .

It is a cyclic number.

It is not a de Polignac number, because 123545551343741 - 2¹⁴ = 123545551327357 is a prime.

It is a super-2 number, since 2×123545551343741² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123545551343701) 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, 61772775671870 + 61772775671871.

It is an arithmetic number, because the mean of its divisors is an integer number (61772775671871).

Almost surely, 2^{123545551343741} is an apocalyptic number.

It is an amenable number.

123545551343741 is a deficient number, since it is larger than the sum of its proper divisors (1).

123545551343741 is an equidigital number, since it uses as much as digits as its factorization.

123545551343741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120000, while the sum is 53.

The spelling of 123545551343741 in words is "one hundred twenty-three trillion, five hundred forty-five billion, five hundred fifty-one million, three hundred forty-three thousand, seven hundred forty-one".