20312551200 has 288 divisors, whose sum is σ = 71376681600. Its totient is φ = 5002117120.

The previous prime is 20312551187. The next prime is 20312551219. The reversal of 20312551200 is 215521302.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1594456 + ... + 1607144.

It is an arithmetic number, because the mean of its divisors is an integer number (247835700).

Almost surely, 2^20312551200 is an apocalyptic number.

20312551200 is a gapful number since it is divisible by the number (20) 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 20312551200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35688340800).

20312551200 is an abundant number, since it is smaller than the sum of its proper divisors (51064130400).

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

20312551200 is a wasteful number, since it uses less digits than its factorization.

20312551200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12764 (or 12751 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The spelling of 20312551200 in words is "twenty billion, three hundred twelve million, five hundred fifty-one thousand, two hundred".