16206121130520 has 64 divisors (see below), whose sum is σ = 48622847015520. Its totient is φ = 4321233757184.

The previous prime is 16206121130519. The next prime is 16206121130527. The reversal of 16206121130520 is 2503112160261.

16206121130520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16206121130527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4919469 + ... + 7524188.

Almost surely, 2^{16206121130520} is an apocalyptic number.

16206121130520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16206121130520 is an abundant number, since it is smaller than the sum of its proper divisors (32416725885000).

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

16206121130520 is a wasteful number, since it uses less digits than its factorization.

16206121130520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12454524 (or 12454520 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 16206121130520 its reverse (2503112160261), we get a palindrome (18709233290781).

The spelling of 16206121130520 in words is "sixteen trillion, two hundred six billion, one hundred twenty-one million, one hundred thirty thousand, five hundred twenty".