20112681952 has 144 divisors (see below), whose sum is σ = 47297779200. Its totient is φ = 8380627200.

The previous prime is 20112681893. The next prime is 20112681973. The reversal of 20112681952 is 25918621102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2276199 + ... + 2285017.

It is an arithmetic number, because the mean of its divisors is an integer number (328456800).

Almost surely, 2^20112681952 is an apocalyptic number.

20112681952 is a gapful number since it is divisible by the number (22) 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 20112681952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23648889600).

20112681952 is an abundant number, since it is smaller than the sum of its proper divisors (27185097248).

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

20112681952 is a wasteful number, since it uses less digits than its factorization.

20112681952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8901 (or 8882 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The spelling of 20112681952 in words is "twenty billion, one hundred twelve million, six hundred eighty-one thousand, nine hundred fifty-two".