20262660143220 has 288 divisors, whose sum is σ = 67777677676800. Its totient is φ = 4859208161280.

The previous prime is 20262660143149. The next prime is 20262660143261. The reversal of 20262660143220 is 2234106626202.

20262660143220 is a `hidden beast` number, since 2 + 0 + 2 + 6 + 2 + 6 + 601 + 43 + 2 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 68016832 + ... + 68314088.

It is an arithmetic number, because the mean of its divisors is an integer number (235339158600).

Almost surely, 2^{20262660143220} is an apocalyptic number.

20262660143220 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 20262660143220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33888838838400).

20262660143220 is an abundant number, since it is smaller than the sum of its proper divisors (47515017533580).

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

20262660143220 is a wasteful number, since it uses less digits than its factorization.

20262660143220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297655 (or 297650 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

Adding to 20262660143220 its reverse (2234106626202), we get a palindrome (22496766769422).

The spelling of 20262660143220 in words is "twenty trillion, two hundred sixty-two billion, six hundred sixty million, one hundred forty-three thousand, two hundred twenty".