102004205543 has 16 divisors (see below), whose sum is σ = 109000170240. Its totient is φ = 95171630400.

The previous prime is 102004205519. The next prime is 102004205591. The reversal of 102004205543 is 345502400201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 102004205543 - 2¹⁸ = 102003943399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102004205243) 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, 9517958 + ... + 9528668.

It is an arithmetic number, because the mean of its divisors is an integer number (6812510640).

Almost surely, 2^102004205543 is an apocalyptic number.

102004205543 is a deficient number, since it is larger than the sum of its proper divisors (6995964697).

102004205543 is a wasteful number, since it uses less digits than its factorization.

102004205543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18278.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 102004205543 its reverse (345502400201), we get a palindrome (447506605744).

The spelling of 102004205543 in words is "one hundred two billion, four million, two hundred five thousand, five hundred forty-three".