210450133780 has 24 divisors (see below), whose sum is σ = 449435881440. Its totient is φ = 82753272480.

The previous prime is 210450133771. The next prime is 210450133781. The reversal of 210450133780 is 87331054012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210450133781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89172606 + ... + 89174965.

It is an arithmetic number, because the mean of its divisors is an integer number (18726495060).

Almost surely, 2^210450133780 is an apocalyptic number.

210450133780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210450133780 is an abundant number, since it is smaller than the sum of its proper divisors (238985747660).

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

210450133780 is a wasteful number, since it uses less digits than its factorization.

210450133780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178347639 (or 178347637 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

Adding to 210450133780 its reverse (87331054012), we get a palindrome (297781187792).

The spelling of 210450133780 in words is "two hundred ten billion, four hundred fifty million, one hundred thirty-three thousand, seven hundred eighty".