20200413660 has 144 divisors (see below), whose sum is σ = 66535771680. Its totient is φ = 4565299200.

The previous prime is 20200413643. The next prime is 20200413671. The reversal of 20200413660 is 6631400202.

It is a super-2 number, since 2×20200413660² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20200413660.

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 47 ways as a sum of consecutive naturals, for example, 223060 + ... + 300260.

It is an arithmetic number, because the mean of its divisors is an integer number (462053970).

Almost surely, 2^20200413660 is an apocalyptic number.

20200413660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20200413660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33267885840).

20200413660 is an abundant number, since it is smaller than the sum of its proper divisors (46335358020).

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

20200413660 is a wasteful number, since it uses less digits than its factorization.

20200413660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77316 (or 77307 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20200413660 its reverse (6631400202), we get a palindrome (26831813862).

The spelling of 20200413660 in words is "twenty billion, two hundred million, four hundred thirteen thousand, six hundred sixty".