20346780025404 has 36 divisors (see below), whose sum is σ = 58779586740784. Its totient is φ = 5813365721472.

The previous prime is 20346780025381. The next prime is 20346780025421. The reversal of 20346780025404 is 40452008764302.

It is a happy number.

20346780025404 is a `hidden beast` number, since 2 + 0 + 34 + 6 + 78 + 0 + 0 + 2 + 540 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20346780025404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40370595037 + ... + 40370595540.

Almost surely, 2^{20346780025404} is an apocalyptic number.

It is an amenable number.

20346780025404 is an abundant number, since it is smaller than the sum of its proper divisors (38432806715380).

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

20346780025404 is a wasteful number, since it uses less digits than its factorization.

20346780025404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80741190594 (or 80741190589 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 45.

Adding to 20346780025404 its reverse (40452008764302), we get a palindrome (60798788789706).

The spelling of 20346780025404 in words is "twenty trillion, three hundred forty-six billion, seven hundred eighty million, twenty-five thousand, four hundred four".