20886202439424 has 864 divisors, whose sum is σ = 73766452999680. Its totient is φ = 5882888632320.

The previous prime is 20886202439423. The next prime is 20886202439441. The reversal of 20886202439424 is 42493420268802.

20886202439424 is a `hidden beast` number, since 2 + 0 + 8 + 8 + 6 + 202 + 4 + 3 + 9 + 424 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a super-3 number, since 3×20886202439424³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20886202439423) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1947789327 + ... + 1947800049.

It is an arithmetic number, because the mean of its divisors is an integer number (85377839120).

Almost surely, 2^{20886202439424} is an apocalyptic number.

20886202439424 is a gapful number since it is divisible by the number (24) 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 20886202439424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36883226499840).

20886202439424 is an abundant number, since it is smaller than the sum of its proper divisors (52880250560256).

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

20886202439424 is an frugal number, since it uses more digits than its factorization.

20886202439424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10845 (or 10806 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 54.

The spelling of 20886202439424 in words is "twenty trillion, eight hundred eighty-six billion, two hundred two million, four hundred thirty-nine thousand, four hundred twenty-four".