523445551131329 has 2 divisors, whose sum is σ = 523445551131330. Its totient is φ = 523445551131328.

The previous prime is 523445551131203. The next prime is 523445551131367. The reversal of 523445551131329 is 923131155544325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318373184290225 + 205072366841104 = 17843015^2 + 14320348^2 .

It is a cyclic number.

It is not a de Polignac number, because 523445551131329 - 2⁴⁰ = 522346039503553 is a prime.

It is not a weakly prime, because it can be changed into another prime (523445551131929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261722775565664 + 261722775565665.

It is an arithmetic number, because the mean of its divisors is an integer number (261722775565665).

Almost surely, 2^{523445551131329} is an apocalyptic number.

It is an amenable number.

523445551131329 is a deficient number, since it is larger than the sum of its proper divisors (1).

523445551131329 is an equidigital number, since it uses as much as digits as its factorization.

523445551131329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720000, while the sum is 53.

The spelling of 523445551131329 in words is "five hundred twenty-three trillion, four hundred forty-five billion, five hundred fifty-one million, one hundred thirty-one thousand, three hundred twenty-nine".