20020722656880 has 320 divisors, whose sum is σ = 69252104010240. Its totient is φ = 4743659827200.

The previous prime is 20020722656861. The next prime is 20020722656947. The reversal of 20020722656880 is 8865622702002.

It is a super-2 number, since 2×20020722656880² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26574990 + ... + 27317970.

It is an arithmetic number, because the mean of its divisors is an integer number (216412825032).

Almost surely, 2^{20020722656880} is an apocalyptic number.

20020722656880 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 20020722656880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34626052005120).

20020722656880 is an abundant number, since it is smaller than the sum of its proper divisors (49231381353360).

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

20020722656880 is a wasteful number, since it uses less digits than its factorization.

20020722656880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743240 (or 743234 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

It can be divided in two parts, 20020722 and 656880, that added together give a palindrome (20677602).

The spelling of 20020722656880 in words is "twenty trillion, twenty billion, seven hundred twenty-two million, six hundred fifty-six thousand, eight hundred eighty".