20411151311242 has 32 divisors (see below), whose sum is σ = 31269704304960. Its totient is φ = 9990220732800.

The previous prime is 20411151311231. The next prime is 20411151311267. The reversal of 20411151311242 is 24211315111402.

It is a self number, because there is not a number n which added to its sum of digits gives 20411151311242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281625093 + ... + 281697559.

It is an arithmetic number, because the mean of its divisors is an integer number (977178259530).

Almost surely, 2^{20411151311242} is an apocalyptic number.

20411151311242 is a deficient number, since it is larger than the sum of its proper divisors (10858552993718).

20411151311242 is a wasteful number, since it uses less digits than its factorization.

20411151311242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88326.

The product of its (nonzero) digits is 1920, while the sum is 28.

Adding to 20411151311242 its reverse (24211315111402), we get a palindrome (44622466422644).

The spelling of 20411151311242 in words is "twenty trillion, four hundred eleven billion, one hundred fifty-one million, three hundred eleven thousand, two hundred forty-two".