20827463623680 has 2112 divisors, whose sum is σ = 84973323165696. Its totient is φ = 4249328025600.

The previous prime is 20827463623643. The next prime is 20827463623721. The reversal of 20827463623680 is 8632636472802.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20827463623680.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 124715350957 + ... + 124715351123.

Almost surely, 2^{20827463623680} is an apocalyptic number.

20827463623680 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 20827463623680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42486661582848).

20827463623680 is an abundant number, since it is smaller than the sum of its proper divisors (64145859542016).

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

20827463623680 is a wasteful number, since it uses less digits than its factorization.

20827463623680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 57.

The spelling of 20827463623680 in words is "twenty trillion, eight hundred twenty-seven billion, four hundred sixty-three million, six hundred twenty-three thousand, six hundred eighty".