521512314513 has 8 divisors (see below), whose sum is σ = 695891729568. Its totient is φ = 347403887904.

The previous prime is 521512314467. The next prime is 521512314529. The reversal of 521512314513 is 315413215125.

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

It is not a de Polignac number, because 521512314513 - 2¹⁰ = 521512313489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (521512314553) 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, 67742620 + ... + 67750317.

It is an arithmetic number, because the mean of its divisors is an integer number (86986466196).

Almost surely, 2^521512314513 is an apocalyptic number.

It is an amenable number.

521512314513 is a deficient number, since it is larger than the sum of its proper divisors (174379415055).

521512314513 is a wasteful number, since it uses less digits than its factorization.

521512314513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135494223.

The product of its digits is 18000, while the sum is 33.

Adding to 521512314513 its reverse (315413215125), we get a palindrome (836925529638).

The spelling of 521512314513 in words is "five hundred twenty-one billion, five hundred twelve million, three hundred fourteen thousand, five hundred thirteen".