20799365690880 has 800 divisors, whose sum is σ = 86165421560064. Its totient is φ = 4696834719744.

The previous prime is 20799365690879. The next prime is 20799365690893. The reversal of 20799365690880 is 8809656399702.

20799365690880 is a `hidden beast` number, since 20 + 7 + 9 + 9 + 36 + 569 + 0 + 8 + 8 + 0 = 666.

It is a super-2 number, since 2×20799365690880² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 20799365690799 and 20799365690808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 120389839 + ... + 120562481.

Almost surely, 2^{20799365690880} is an apocalyptic number.

20799365690880 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 20799365690880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43082710780032).

20799365690880 is an abundant number, since it is smaller than the sum of its proper divisors (65366055869184).

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

20799365690880 is an equidigital number, since it uses as much as digits as its factorization.

20799365690880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172768 (or 172743 counting only the distinct ones).

The product of its (nonzero) digits is 352719360, while the sum is 72.

The spelling of 20799365690880 in words is "twenty trillion, seven hundred ninety-nine billion, three hundred sixty-five million, six hundred ninety thousand, eight hundred eighty".