20112555200 has 42 divisors (see below), whose sum is σ = 49489460076. Its totient is φ = 8045021440.

The previous prime is 20112555191. The next prime is 20112555209. The reversal of 20112555200 is 255521102.

It is an interprime number because it is at equal distance from previous prime (20112555191) and next prime (20112555209).

It is not an unprimeable number, because it can be changed into a prime (20112555209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6283574 + ... + 6286773.

It is an arithmetic number, because the mean of its divisors is an integer number (1178320478).

Almost surely, 2^20112555200 is an apocalyptic number.

20112555200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112555200 is an abundant number, since it is smaller than the sum of its proper divisors (29376904876).

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

20112555200 is a wasteful number, since it uses less digits than its factorization.

20112555200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12570369 (or 12570354 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The spelling of 20112555200 in words is "twenty billion, one hundred twelve million, five hundred fifty-five thousand, two hundred".