20440400404402 has 48 divisors (see below), whose sum is σ = 34102295924256. Its totient is φ = 9181043625600.

The previous prime is 20440400404397. The next prime is 20440400404441.

20440400404402 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7922413 + ... + 10180639.

It is an arithmetic number, because the mean of its divisors is an integer number (710464498422).

Almost surely, 2^{20440400404402} is an apocalyptic number.

20440400404402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20440400404402 is a deficient number, since it is larger than the sum of its proper divisors (13661895519854).

20440400404402 is a wasteful number, since it uses less digits than its factorization.

20440400404402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258695 (or 2258684 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

It can be divided in two parts, 20440400 and 404402, that added together give a palindrome (20844802).

The spelling of 20440400404402 in words is "twenty trillion, four hundred forty billion, four hundred million, four hundred four thousand, four hundred two".