204345543402 has 192 divisors, whose sum is σ = 600350849280. Its totient is φ = 48508416000.

The previous prime is 204345543359. The next prime is 204345543403.

204345543402 is a `hidden beast` number, since 20 + 43 + 4 + 554 + 3 + 40 + 2 = 666.

204345543402 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×204345543402² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204345543403) 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, 1763674 + ... + 1875962.

It is an arithmetic number, because the mean of its divisors is an integer number (3126827340).

Almost surely, 2^204345543402 is an apocalyptic number.

204345543402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 204345543402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300175424640).

204345543402 is an abundant number, since it is smaller than the sum of its proper divisors (396005305878).

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

204345543402 is a wasteful number, since it uses less digits than its factorization.

204345543402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112429 (or 112426 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 36.

It can be divided in two parts, 204345 and 543402, that added together give a palindrome (747747).

The spelling of 204345543402 in words is "two hundred four billion, three hundred forty-five million, five hundred forty-three thousand, four hundred two".