11544420402 has 64 divisors (see below), whose sum is σ = 26255093760. Its totient is φ = 3758361552.

The previous prime is 11544420359. The next prime is 11544420413. The reversal of 11544420402 is 20402444511.

11544420402 is a `hidden beast` number, since 1 + 15 + 444 + 204 + 0 + 2 = 666.

It is a super-2 number, since 2×11544420402² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1272093 + ... + 1281135.

It is an arithmetic number, because the mean of its divisors is an integer number (410235840).

Almost surely, 2^11544420402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11544420402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13127546880).

11544420402 is an abundant number, since it is smaller than the sum of its proper divisors (14710673358).

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

11544420402 is a wasteful number, since it uses less digits than its factorization.

11544420402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9604 (or 9598 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 11544420402 its reverse (20402444511), we get a palindrome (31946864913).

The spelling of 11544420402 in words is "eleven billion, five hundred forty-four million, four hundred twenty thousand, four hundred two".