26561600204 has 24 divisors (see below), whose sum is σ = 47431733328. Its totient is φ = 13010437440.

The previous prime is 26561600189. The next prime is 26561600237. The reversal of 26561600204 is 40200616562.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45359 + ... + 234905.

It is an arithmetic number, because the mean of its divisors is an integer number (1976322222).

Almost surely, 2^26561600204 is an apocalyptic number.

It is an amenable number.

26561600204 is a deficient number, since it is larger than the sum of its proper divisors (20870133124).

26561600204 is a wasteful number, since it uses less digits than its factorization.

26561600204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190265 (or 190263 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 26561600204 in words is "twenty-six billion, five hundred sixty-one million, six hundred thousand, two hundred four".