26581000828 has 12 divisors (see below), whose sum is σ = 49253031072. Its totient is φ = 12508706240.

The previous prime is 26581000819. The next prime is 26581000841. The reversal of 26581000828 is 82800018562.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195448468 + ... + 195448603.

It is an arithmetic number, because the mean of its divisors is an integer number (4104419256).

Almost surely, 2^26581000828 is an apocalyptic number.

It is an amenable number.

26581000828 is a deficient number, since it is larger than the sum of its proper divisors (22672030244).

26581000828 is a wasteful number, since it uses less digits than its factorization.

26581000828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390897092 (or 390897090 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 26581000828 in words is "twenty-six billion, five hundred eighty-one million, eight hundred twenty-eight", and thus it is an aban number.