521242320054004 has 48 divisors (see below), whose sum is σ = 922196023257600. Its totient is φ = 257764317843456.

The previous prime is 521242320053977. The next prime is 521242320054037. The reversal of 521242320054004 is 400450023242125.

It is a congruent number.

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, 1264058292 + ... + 1264470580.

It is an arithmetic number, because the mean of its divisors is an integer number (19212417151200).

Almost surely, 2^{521242320054004} is an apocalyptic number.

It is an amenable number.

521242320054004 is a deficient number, since it is larger than the sum of its proper divisors (400953703203596).

521242320054004 is a wasteful number, since it uses less digits than its factorization.

521242320054004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416272 (or 416270 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 521242320054004 its reverse (400450023242125), we get a palindrome (921692343296129).

The spelling of 521242320054004 in words is "five hundred twenty-one trillion, two hundred forty-two billion, three hundred twenty million, fifty-four thousand, four".