20372785200 has 480 divisors, whose sum is σ = 75041030400. Its totient is φ = 5246208000.

The previous prime is 20372785183. The next prime is 20372785201. The reversal of 20372785200 is 258727302.

It is a happy number.

20372785200 is a `hidden beast` number, since 2 + 0 + 372 + 7 + 85 + 200 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20372785201) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 61549035 + ... + 61549365.

It is an arithmetic number, because the mean of its divisors is an integer number (156335480).

Almost surely, 2^20372785200 is an apocalyptic number.

20372785200 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 20372785200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37520515200).

20372785200 is an abundant number, since it is smaller than the sum of its proper divisors (54668245200).

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

20372785200 is a wasteful number, since it uses less digits than its factorization.

20372785200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538 (or 521 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The spelling of 20372785200 in words is "twenty billion, three hundred seventy-two million, seven hundred eighty-five thousand, two hundred".