123355204250543 has 2 divisors, whose sum is σ = 123355204250544. Its totient is φ = 123355204250542.

The previous prime is 123355204250489. The next prime is 123355204250563. The reversal of 123355204250543 is 345052402553321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123355204250543 - 2⁴⁴ = 105763018206127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123355204250494 and 123355204250503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123355204250563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61677602125271 + 61677602125272.

It is an arithmetic number, because the mean of its divisors is an integer number (61677602125272).

Almost surely, 2^{123355204250543} is an apocalyptic number.

123355204250543 is a deficient number, since it is larger than the sum of its proper divisors (1).

123355204250543 is an equidigital number, since it uses as much as digits as its factorization.

123355204250543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160000, while the sum is 44.

The spelling of 123355204250543 in words is "one hundred twenty-three trillion, three hundred fifty-five billion, two hundred four million, two hundred fifty thousand, five hundred forty-three".