521057220159 has 16 divisors (see below), whose sum is σ = 794368143360. Its totient is φ = 297605912160.

The previous prime is 521057220119. The next prime is 521057220163. The reversal of 521057220159 is 951022750125.

It is a happy number.

It is not a de Polignac number, because 521057220159 - 2⁷ = 521057220031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521057220109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5832564 + ... + 5921225.

It is an arithmetic number, because the mean of its divisors is an integer number (49648008960).

Almost surely, 2^521057220159 is an apocalyptic number.

521057220159 is a deficient number, since it is larger than the sum of its proper divisors (273310923201).

521057220159 is a wasteful number, since it uses less digits than its factorization.

521057220159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11755910.

The product of its (nonzero) digits is 63000, while the sum is 39.

The spelling of 521057220159 in words is "five hundred twenty-one billion, fifty-seven million, two hundred twenty thousand, one hundred fifty-nine".