20401223425404 has 48 divisors (see below), whose sum is σ = 49759842343680. Its totient is φ = 6493305976960.

The previous prime is 20401223425397. The next prime is 20401223425507. The reversal of 20401223425404 is 40452432210402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64796802 + ... + 65110889.

It is an arithmetic number, because the mean of its divisors is an integer number (1036663382160).

Almost surely, 2^{20401223425404} is an apocalyptic number.

It is an amenable number.

20401223425404 is an abundant number, since it is smaller than the sum of its proper divisors (29358618918276).

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

20401223425404 is a wasteful number, since it uses less digits than its factorization.

20401223425404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129908290 (or 129908288 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 33.

Adding to 20401223425404 its reverse (40452432210402), we get a palindrome (60853655635806).

The spelling of 20401223425404 in words is "twenty trillion, four hundred one billion, two hundred twenty-three million, four hundred twenty-five thousand, four hundred four".