16132053550521 has 4 divisors (see below), whose sum is σ = 21509404734032. Its totient is φ = 10754702367012.

The previous prime is 16132053550441. The next prime is 16132053550523. The reversal of 16132053550521 is 12505535023161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-16132053550521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16132053550521.

It is not an unprimeable number, because it can be changed into a prime (16132053550523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2688675591751 + ... + 2688675591756.

It is an arithmetic number, because the mean of its divisors is an integer number (5377351183508).

Almost surely, 2^{16132053550521} is an apocalyptic number.

It is an amenable number.

16132053550521 is a deficient number, since it is larger than the sum of its proper divisors (5377351183511).

16132053550521 is an equidigital number, since it uses as much as digits as its factorization.

16132053550521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5377351183510.

The product of its (nonzero) digits is 135000, while the sum is 39.

Adding to 16132053550521 its reverse (12505535023161), we get a palindrome (28637588573682).

The spelling of 16132053550521 in words is "sixteen trillion, one hundred thirty-two billion, fifty-three million, five hundred fifty thousand, five hundred twenty-one".