521641127712 has 96 divisors (see below), whose sum is σ = 1430509731840. Its totient is φ = 166243887360.

The previous prime is 521641127701. The next prime is 521641127747. The reversal of 521641127712 is 217721146125.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×521641127712² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 808912 + ... + 1302927.

It is an arithmetic number, because the mean of its divisors is an integer number (14901143040).

Almost surely, 2^521641127712 is an apocalyptic number.

It is an amenable number.

521641127712 is an abundant number, since it is smaller than the sum of its proper divisors (908868604128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521641127712 is a wasteful number, since it uses less digits than its factorization.

521641127712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111966 (or 2111958 counting only the distinct ones).

The product of its digits is 47040, while the sum is 39.

The spelling of 521641127712 in words is "five hundred twenty-one billion, six hundred forty-one million, one hundred twenty-seven thousand, seven hundred twelve".