20864080556088 has 512 divisors, whose sum is σ = 70931408486400. Its totient is φ = 4949445772800.

The previous prime is 20864080556023. The next prime is 20864080556117. The reversal of 20864080556088 is 88065508046802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 286231695 + ... + 286304577.

It is an arithmetic number, because the mean of its divisors is an integer number (138537907200).

Almost surely, 2^{20864080556088} is an apocalyptic number.

20864080556088 is a gapful number since it is divisible by the number (28) 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 20864080556088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35465704243200).

20864080556088 is an abundant number, since it is smaller than the sum of its proper divisors (50067327930312).

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

20864080556088 is a wasteful number, since it uses less digits than its factorization.

20864080556088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73223 (or 73219 counting only the distinct ones).

The product of its (nonzero) digits is 29491200, while the sum is 60.

The spelling of 20864080556088 in words is "twenty trillion, eight hundred sixty-four billion, eighty million, five hundred fifty-six thousand, eighty-eight".