16520212105516 has 24 divisors (see below), whose sum is σ = 33933408651296. Its totient is φ = 6888737093760.

The previous prime is 16520212105499. The next prime is 16520212105583. The reversal of 16520212105516 is 61550121202561.

It is a super-2 number, since 2×16520212105516² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

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 7 ways as a sum of consecutive naturals, for example, 7973074305 + ... + 7973076376.

Almost surely, 2^{16520212105516} is an apocalyptic number.

It is an amenable number.

16520212105516 is an abundant number, since it is smaller than the sum of its proper divisors (17413196545780).

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

16520212105516 is a wasteful number, since it uses less digits than its factorization.

16520212105516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15946150729 (or 15946150727 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 37.

The spelling of 16520212105516 in words is "sixteen trillion, five hundred twenty billion, two hundred twelve million, one hundred five thousand, five hundred sixteen".