521580419996 has 48 divisors (see below), whose sum is σ = 984235005600. Its totient is φ = 241335376128.

The previous prime is 521580419993. The next prime is 521580420001. The reversal of 521580419996 is 699914085125.

It is a super-2 number, since 2×521580419996² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521580419993) 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, 619331 + ... + 1194458.

It is an arithmetic number, because the mean of its divisors is an integer number (20504895950).

Almost surely, 2^521580419996 is an apocalyptic number.

It is an amenable number.

521580419996 is a deficient number, since it is larger than the sum of its proper divisors (462654585604).

521580419996 is a wasteful number, since it uses less digits than its factorization.

521580419996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813926 (or 1813924 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 59.

The spelling of 521580419996 in words is "five hundred twenty-one billion, five hundred eighty million, four hundred nineteen thousand, nine hundred ninety-six".