20401440410442 has 128 divisors (see below), whose sum is σ = 54888243314688. Its totient is φ = 4900735872000.

The previous prime is 20401440410413. The next prime is 20401440410479. The reversal of 20401440410442 is 24401404410402.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35163184 + ... + 35738667.

It is an arithmetic number, because the mean of its divisors is an integer number (428814400896).

Almost surely, 2^{20401440410442} is an apocalyptic number.

20401440410442 is an abundant number, since it is smaller than the sum of its proper divisors (34486802904246).

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

20401440410442 is a wasteful number, since it uses less digits than its factorization.

20401440410442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70901924.

The product of its (nonzero) digits is 16384, while the sum is 30.

Adding to 20401440410442 its reverse (24401404410402), we get a palindrome (44802844820844).

The spelling of 20401440410442 in words is "twenty trillion, four hundred one billion, four hundred forty million, four hundred ten thousand, four hundred forty-two".