523045540321 has 2 divisors, whose sum is σ = 523045540322. Its totient is φ = 523045540320.

The previous prime is 523045540289. The next prime is 523045540337. The reversal of 523045540321 is 123045540325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 514089000000 + 8956540321 = 717000^2 + 94639^2 .

It is a cyclic number.

It is not a de Polignac number, because 523045540321 - 2⁵ = 523045540289 is a prime.

It is not a weakly prime, because it can be changed into another prime (523045540421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261522770160 + 261522770161.

It is an arithmetic number, because the mean of its divisors is an integer number (261522770161).

Almost surely, 2^523045540321 is an apocalyptic number.

It is an amenable number.

523045540321 is a deficient number, since it is larger than the sum of its proper divisors (1).

523045540321 is an equidigital number, since it uses as much as digits as its factorization.

523045540321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 34.

The spelling of 523045540321 in words is "five hundred twenty-three billion, forty-five million, five hundred forty thousand, three hundred twenty-one".