20331455200 has 144 divisors (see below), whose sum is σ = 57256585344. Its totient is φ = 6905433600.

The previous prime is 20331455197. The next prime is 20331455203. The reversal of 20331455200 is 255413302.

It is an interprime number because it is at equal distance from previous prime (20331455197) and next prime (20331455203).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331455203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 582235 + ... + 616165.

It is an arithmetic number, because the mean of its divisors is an integer number (397615176).

Almost surely, 2^20331455200 is an apocalyptic number.

20331455200 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 20331455200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28628292672).

20331455200 is an abundant number, since it is smaller than the sum of its proper divisors (36925130144).

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

20331455200 is a wasteful number, since it uses less digits than its factorization.

20331455200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34065 (or 34052 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 20331455200 its reverse (255413302), we get a palindrome (20586868502).

The spelling of 20331455200 in words is "twenty billion, three hundred thirty-one million, four hundred fifty-five thousand, two hundred".