11544420401 has 4 divisors (see below), whose sum is σ = 12223503972. Its totient is φ = 10865336832.

The previous prime is 11544420359. The next prime is 11544420413. The reversal of 11544420401 is 10402444511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4573005376 + 6971415025 = 67624^2 + 83495^2 .

It is a cyclic number.

It is not a de Polignac number, because 11544420401 - 2¹⁴ = 11544404017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11544420101) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 339541760 + ... + 339541793.

It is an arithmetic number, because the mean of its divisors is an integer number (3055875993).

Almost surely, 2^11544420401 is an apocalyptic number.

It is an amenable number.

11544420401 is a deficient number, since it is larger than the sum of its proper divisors (679083571).

11544420401 is an equidigital number, since it uses as much as digits as its factorization.

11544420401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679083570.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 11544420401 its reverse (10402444511), we get a palindrome (21946864912).

The spelling of 11544420401 in words is "eleven billion, five hundred forty-four million, four hundred twenty thousand, four hundred one".