521411033451013 has 8 divisors (see below), whose sum is σ = 539416775494296. Its totient is φ = 503657119968000.

The previous prime is 521411033450903. The next prime is 521411033451037. The reversal of 521411033451013 is 310154330114125.

It can be written as a sum of positive squares in 4 ways, for example, as 212560566414849 + 308850467036164 = 14579457^2 + 17574142^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 521411033451013 - 2²⁵ = 521410999896581 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 521411033451013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521411033451043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62957135856 + ... + 62957144137.

It is an arithmetic number, because the mean of its divisors is an integer number (67427096936787).

Almost surely, 2^{521411033451013} is an apocalyptic number.

It is an amenable number.

521411033451013 is a deficient number, since it is larger than the sum of its proper divisors (18005742043283).

521411033451013 is a wasteful number, since it uses less digits than its factorization.

521411033451013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125914280135.

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 521411033451013 its reverse (310154330114125), we get a palindrome (831565363565138).

The spelling of 521411033451013 in words is "five hundred twenty-one trillion, four hundred eleven billion, thirty-three million, four hundred fifty-one thousand, thirteen".