20413361655612 has 144 divisors (see below), whose sum is σ = 53126271787680. Its totient is φ = 6606652225536.

The previous prime is 20413361655581. The next prime is 20413361655671. The reversal of 20413361655612 is 21655616331402.

It is a happy number.

20413361655612 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 33 + 61 + 6 + 556 + 1 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 67899768 + ... + 68199744.

It is an arithmetic number, because the mean of its divisors is an integer number (368932442970).

Almost surely, 2^{20413361655612} 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 20413361655612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26563135893840).

20413361655612 is an abundant number, since it is smaller than the sum of its proper divisors (32712910132068).

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

20413361655612 is a wasteful number, since it uses less digits than its factorization.

20413361655612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300460 (or 300455 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 20413361655612 in words is "twenty trillion, four hundred thirteen billion, three hundred sixty-one million, six hundred fifty-five thousand, six hundred twelve".