521330355414 has 96 divisors (see below), whose sum is σ = 1290850737120. Its totient is φ = 155814658560.

The previous prime is 521330355391. The next prime is 521330355431. The reversal of 521330355414 is 414553033125.

521330355414 is a `hidden beast` number, since 52 + 1 + 3 + 30 + 35 + 541 + 4 = 666.

It is a super-2 number, since 2×521330355414² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 69507 + ... + 1023470.

It is an arithmetic number, because the mean of its divisors is an integer number (13446361845).

Almost surely, 2^521330355414 is an apocalyptic number.

521330355414 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 521330355414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (645425368560).

521330355414 is an abundant number, since it is smaller than the sum of its proper divisors (769520381706).

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

521330355414 is a wasteful number, since it uses less digits than its factorization.

521330355414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093083 (or 1093066 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 521330355414 its reverse (414553033125), we get a palindrome (935883388539).

The spelling of 521330355414 in words is "five hundred twenty-one billion, three hundred thirty million, three hundred fifty-five thousand, four hundred fourteen".