520345426307123 has 2 divisors, whose sum is σ = 520345426307124. Its totient is φ = 520345426307122.

The previous prime is 520345426307023. The next prime is 520345426307131. The reversal of 520345426307123 is 321703624543025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520345426307123 - 2²² = 520345422112819 is a prime.

It is not a weakly prime, because it can be changed into another prime (520345426307023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260172713153561 + 260172713153562.

It is an arithmetic number, because the mean of its divisors is an integer number (260172713153562).

Almost surely, 2^{520345426307123} is an apocalyptic number.

520345426307123 is a deficient number, since it is larger than the sum of its proper divisors (1).

520345426307123 is an equidigital number, since it uses as much as digits as its factorization.

520345426307123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 47.

The spelling of 520345426307123 in words is "five hundred twenty trillion, three hundred forty-five billion, four hundred twenty-six million, three hundred seven thousand, one hundred twenty-three".