16520181412252 has 48 divisors (see below), whose sum is σ = 33534894274560. Its totient is φ = 6974693827200.

The previous prime is 16520181412249. The next prime is 16520181412303. The reversal of 16520181412252 is 25221418102561.

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 15 ways as a sum of consecutive naturals, for example, 11555824 + ... + 12906487.

It is an arithmetic number, because the mean of its divisors is an integer number (698643630720).

Almost surely, 2^{16520181412252} is an apocalyptic number.

It is an amenable number.

16520181412252 is an abundant number, since it is smaller than the sum of its proper divisors (17014712862308).

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

16520181412252 is a wasteful number, since it uses less digits than its factorization.

16520181412252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24462682 (or 24462680 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The spelling of 16520181412252 in words is "sixteen trillion, five hundred twenty billion, one hundred eighty-one million, four hundred twelve thousand, two hundred fifty-two".