15405222116401 has 8 divisors (see below), whose sum is σ = 16624305408704. Its totient is φ = 14191005425040.

The previous prime is 15405222116287. The next prime is 15405222116419. The reversal of 15405222116401 is 10461122250451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15405222116401 - 2⁹ = 15405222115889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15405222116701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1216643655 + ... + 1216656316.

It is an arithmetic number, because the mean of its divisors is an integer number (2078038176088).

Almost surely, 2^{15405222116401} is an apocalyptic number.

It is an amenable number.

15405222116401 is a deficient number, since it is larger than the sum of its proper divisors (1219083292303).

15405222116401 is a wasteful number, since it uses less digits than its factorization.

15405222116401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433300471.

The product of its (nonzero) digits is 19200, while the sum is 34.

Adding to 15405222116401 its reverse (10461122250451), we get a palindrome (25866344366852).

The spelling of 15405222116401 in words is "fifteen trillion, four hundred five billion, two hundred twenty-two million, one hundred sixteen thousand, four hundred one".