204100401043 has 16 divisors (see below), whose sum is σ = 259655961600. Its totient is φ = 159039270600.

The previous prime is 204100401023. The next prime is 204100401053. The reversal of 204100401043 is 340104001402.

It is not a de Polignac number, because 204100401043 - 2⁹ = 204100400531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204100401043.

It is not an unprimeable number, because it can be changed into a prime (204100401023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27043723 + ... + 27051268.

It is an arithmetic number, because the mean of its divisors is an integer number (16228497600).

Almost surely, 2^204100401043 is an apocalyptic number.

204100401043 is a deficient number, since it is larger than the sum of its proper divisors (55555560557).

204100401043 is an equidigital number, since it uses as much as digits as its factorization.

204100401043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54095023 (or 54095009 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 204100401043 its reverse (340104001402), we get a palindrome (544204402445).

The spelling of 204100401043 in words is "two hundred four billion, one hundred million, four hundred one thousand, forty-three".