521278382080 has 672 divisors, whose sum is σ = 1475861899680. Its totient is φ = 175531622400.

The previous prime is 521278382059. The next prime is 521278382123. The reversal of 521278382080 is 80283872125.

It is a self number, because there is not a number n which added to its sum of digits gives 521278382080.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12714106860 + ... + 12714106900.

It is an arithmetic number, because the mean of its divisors is an integer number (2196223065).

Almost surely, 2^521278382080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521278382080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737930949840).

521278382080 is an abundant number, since it is smaller than the sum of its proper divisors (954583517600).

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

521278382080 is a wasteful number, since it uses less digits than its factorization.

521278382080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 521278382080 in words is "five hundred twenty-one billion, two hundred seventy-eight million, three hundred eighty-two thousand, eighty".