200173128330 has 128 divisors (see below), whose sum is σ = 553415639040. Its totient is φ = 45391207680.

The previous prime is 200173128319. The next prime is 200173128341. The reversal of 200173128330 is 33821371002.

It is an interprime number because it is at equal distance from previous prime (200173128319) and next prime (200173128341).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13594132 + ... + 13608848.

It is an arithmetic number, because the mean of its divisors is an integer number (4323559680).

Almost surely, 2^200173128330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200173128330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276707819520).

200173128330 is an abundant number, since it is smaller than the sum of its proper divisors (353242510710).

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

200173128330 is a wasteful number, since it uses less digits than its factorization.

200173128330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15244.

The product of its (nonzero) digits is 6048, while the sum is 30.

Adding to 200173128330 its reverse (33821371002), we get a palindrome (233994499332).

The spelling of 200173128330 in words is "two hundred billion, one hundred seventy-three million, one hundred twenty-eight thousand, three hundred thirty".