521741136121117 has 16 divisors (see below), whose sum is σ = 573878000704320. Its totient is φ = 474308511940560.

The previous prime is 521741136121097. The next prime is 521741136121141. The reversal of 521741136121117 is 711121631147125.

It is not a de Polignac number, because 521741136121117 - 2¹¹ = 521741136119069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521741136121217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 583666734 + ... + 584559952.

It is an arithmetic number, because the mean of its divisors is an integer number (35867375044020).

Almost surely, 2^{521741136121117} is an apocalyptic number.

It is an amenable number.

521741136121117 is a deficient number, since it is larger than the sum of its proper divisors (52136864583203).

521741136121117 is an equidigital number, since it uses as much as digits as its factorization.

521741136121117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332105 (or 1332083 counting only the distinct ones).

The product of its digits is 70560, while the sum is 43.

The spelling of 521741136121117 in words is "five hundred twenty-one trillion, seven hundred forty-one billion, one hundred thirty-six million, one hundred twenty-one thousand, one hundred seventeen".