11402543104 has 68 divisors (see below), whose sum is σ = 22927463604. Its totient is φ = 5670699008.

The previous prime is 11402543081. The next prime is 11402543107. The reversal of 11402543104 is 40134520411.

It can be written as a sum of positive squares in 2 ways, for example, as 11286937600 + 115605504 = 106240^2 + 10752^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11402543107) 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, 16842414 + ... + 16843090.

Almost surely, 2^11402543104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11402543104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11463731802).

11402543104 is an abundant number, since it is smaller than the sum of its proper divisors (11524920500).

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

11402543104 is an frugal number, since it uses more digits than its factorization.

11402543104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The spelling of 11402543104 in words is "eleven billion, four hundred two million, five hundred forty-three thousand, one hundred four".