20892681216 has 528 divisors, whose sum is σ = 72424497600. Its totient is φ = 5945425920.

The previous prime is 20892681211. The next prime is 20892681239. The reversal of 20892681216 is 61218629802.

It is a tau number, because it is divible by the number of its divisors (528).

It is not an unprimeable number, because it can be changed into a prime (20892681211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46531360 + ... + 46531808.

Almost surely, 2^20892681216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20892681216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36212248800).

20892681216 is an abundant number, since it is smaller than the sum of its proper divisors (51531816384).

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

20892681216 is a wasteful number, since it uses less digits than its factorization.

20892681216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 20892681216 in words is "twenty billion, eight hundred ninety-two million, six hundred eighty-one thousand, two hundred sixteen".