13555422100 has 72 divisors (see below), whose sum is σ = 32407363296. Its totient is φ = 4880400000.

The previous prime is 13555422079. The next prime is 13555422109. The reversal of 13555422100 is 122455531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13555422109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50095 + ... + 172105.

It is an arithmetic number, because the mean of its divisors is an integer number (450102268).

Almost surely, 2^13555422100 is an apocalyptic number.

13555422100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13555422100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16203681648).

13555422100 is an abundant number, since it is smaller than the sum of its proper divisors (18851941196).

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

13555422100 is a wasteful number, since it uses less digits than its factorization.

13555422100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122137 (or 122130 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 13555422100 its reverse (122455531), we get a palindrome (13677877631).

The spelling of 13555422100 in words is "thirteen billion, five hundred fifty-five million, four hundred twenty-two thousand, one hundred".