20854244112 has 160 divisors (see below), whose sum is σ = 61022094336. Its totient is φ = 6092236800.

The previous prime is 20854244111. The next prime is 20854244113. The reversal of 20854244112 is 21144245802.

It is an interprime number because it is at equal distance from previous prime (20854244111) and next prime (20854244113).

It is not an unprimeable number, because it can be changed into a prime (20854244111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1015062 + ... + 1035402.

Almost surely, 2^20854244112 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 20854244112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30511047168).

20854244112 is an abundant number, since it is smaller than the sum of its proper divisors (40167850224).

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

20854244112 is a wasteful number, since it uses less digits than its factorization.

20854244112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20449 (or 20443 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 33.

Adding to 20854244112 its reverse (21144245802), we get a palindrome (41998489914).

The spelling of 20854244112 in words is "twenty billion, eight hundred fifty-four million, two hundred forty-four thousand, one hundred twelve".