13543404402 has 96 divisors (see below), whose sum is σ = 31464437760. Its totient is φ = 3872642400.

The previous prime is 13543404377. The next prime is 13543404419. The reversal of 13543404402 is 20440434531.

It is a super-2 number, since 2×13543404402² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13543404402.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3736363 + ... + 3739985.

It is an arithmetic number, because the mean of its divisors is an integer number (327754560).

Almost surely, 2^13543404402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13543404402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15732218880).

13543404402 is an abundant number, since it is smaller than the sum of its proper divisors (17921033358).

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

13543404402 is a wasteful number, since it uses less digits than its factorization.

13543404402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940 (or 3929 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 13543404402 its reverse (20440434531), we get a palindrome (33983838933).

The spelling of 13543404402 in words is "thirteen billion, five hundred forty-three million, four hundred four thousand, four hundred two".