20413205346424 has 64 divisors (see below), whose sum is σ = 42172768493280. Its totient is φ = 9185755200000.

The previous prime is 20413205346419. The next prime is 20413205346431. The reversal of 20413205346424 is 42464350231402.

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, 76062874 + ... + 76330774.

Almost surely, 2^{20413205346424} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20413205346424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21086384246640).

20413205346424 is an abundant number, since it is smaller than the sum of its proper divisors (21759563146856).

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

20413205346424 is a wasteful number, since it uses less digits than its factorization.

20413205346424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276592 (or 276588 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 40.

Adding to 20413205346424 its reverse (42464350231402), we get a palindrome (62877555577826).

The spelling of 20413205346424 in words is "twenty trillion, four hundred thirteen billion, two hundred five million, three hundred forty-six thousand, four hundred twenty-four".