521201505072 has 20 divisors (see below), whose sum is σ = 1346437221560. Its totient is φ = 173733835008.

The previous prime is 521201505067. The next prime is 521201505073. The reversal of 521201505072 is 270505102125.

It is not an unprimeable number, because it can be changed into a prime (521201505073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5429182297 + ... + 5429182392.

It is an arithmetic number, because the mean of its divisors is an integer number (67321861078).

Almost surely, 2^521201505072 is an apocalyptic number.

It is an amenable number.

521201505072 is an abundant number, since it is smaller than the sum of its proper divisors (825235716488).

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

521201505072 is a wasteful number, since it uses less digits than its factorization.

521201505072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10858364700 (or 10858364694 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 30.

Adding to 521201505072 its reverse (270505102125), we get a palindrome (791706607197).

The spelling of 521201505072 in words is "five hundred twenty-one billion, two hundred one million, five hundred five thousand, seventy-two".