204455132322450 has 144 divisors (see below), whose sum is σ = 530775253388160. Its totient is φ = 52059840396800.

The previous prime is 204455132322433. The next prime is 204455132322481. The reversal of 204455132322450 is 54223231554402.

It is a super-2 number, since 2×204455132322450² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3225016 + ... + 20477084.

It is an arithmetic number, because the mean of its divisors is an integer number (3685939259640).

Almost surely, 2^{204455132322450} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204455132322450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265387626694080).

204455132322450 is an abundant number, since it is smaller than the sum of its proper divisors (326320121065710).

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

204455132322450 is a wasteful number, since it uses less digits than its factorization.

204455132322450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17252213 (or 17252167 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 42.

Adding to 204455132322450 its reverse (54223231554402), we get a palindrome (258678363876852).

The spelling of 204455132322450 in words is "two hundred four trillion, four hundred fifty-five billion, one hundred thirty-two million, three hundred twenty-two thousand, four hundred fifty".