20404325514551 has 8 divisors (see below), whose sum is σ = 22259898262800. Its totient is φ = 18548858443840.

The previous prime is 20404325514523. The next prime is 20404325514569. The reversal of 20404325514551 is 15541552340402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20404325514551 - 2⁶ = 20404325514487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20404325514499 and 20404325514508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20404325514581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26015396 + ... + 26788233.

It is an arithmetic number, because the mean of its divisors is an integer number (2782487282850).

Almost surely, 2^{20404325514551} is an apocalyptic number.

20404325514551 is a deficient number, since it is larger than the sum of its proper divisors (1855572748249).

20404325514551 is a wasteful number, since it uses less digits than its factorization.

20404325514551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52838769.

The product of its (nonzero) digits is 480000, while the sum is 41.

Adding to 20404325514551 its reverse (15541552340402), we get a palindrome (35945877854953).

The spelling of 20404325514551 in words is "twenty trillion, four hundred four billion, three hundred twenty-five million, five hundred fourteen thousand, five hundred fifty-one".