13550021016 has 64 divisors (see below), whose sum is σ = 40049337600. Its totient is φ = 3737935488.

The previous prime is 13550021011. The next prime is 13550021021. The reversal of 13550021016 is 61012005531.

13550021016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13550021011) and next prime (13550021021).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13550021011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1385730 + ... + 1395473.

It is an arithmetic number, because the mean of its divisors is an integer number (625770900).

Almost surely, 2^13550021016 is an apocalyptic number.

It is an amenable number.

13550021016 is an abundant number, since it is smaller than the sum of its proper divisors (26499316584).

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

13550021016 is a wasteful number, since it uses less digits than its factorization.

13550021016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781248 (or 2781244 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 13550021016 its reverse (61012005531), we get a palindrome (74562026547).

The spelling of 13550021016 in words is "thirteen billion, five hundred fifty million, twenty-one thousand, sixteen".