13533254220 has 96 divisors (see below), whose sum is σ = 38235052800. Its totient is φ = 3576455424.

The previous prime is 13533254191. The next prime is 13533254221. The reversal of 13533254220 is 2245233531.

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

It is not an unprimeable number, because it can be changed into a prime (13533254221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3116811 + ... + 3121149.

It is an arithmetic number, because the mean of its divisors is an integer number (398281800).

Almost surely, 2^13533254220 is an apocalyptic number.

13533254220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13533254220 is an abundant number, since it is smaller than the sum of its proper divisors (24701798580).

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

13533254220 is a wasteful number, since it uses less digits than its factorization.

13533254220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4807 (or 4805 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 13533254220 its reverse (2245233531), we get a palindrome (15778487751).

The spelling of 13533254220 in words is "thirteen billion, five hundred thirty-three million, two hundred fifty-four thousand, two hundred twenty".