28555762805801 has 16 divisors (see below), whose sum is σ = 35619247577088. Its totient is φ = 22240457754000.

The previous prime is 28555762805797. The next prime is 28555762805803. The reversal of 28555762805801 is 10850826755582.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28555762805801 - 2² = 28555762805797 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28555762805803) 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, 89723375 + ... + 90041076.

It is an arithmetic number, because the mean of its divisors is an integer number (2226202973568).

Almost surely, 2^{28555762805801} is an apocalyptic number.

It is an amenable number.

28555762805801 is a deficient number, since it is larger than the sum of its proper divisors (7063484771287).

28555762805801 is a wasteful number, since it uses less digits than its factorization.

28555762805801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179766532.

The product of its (nonzero) digits is 53760000, while the sum is 62.

The spelling of 28555762805801 in words is "twenty-eight trillion, five hundred fifty-five billion, seven hundred sixty-two million, eight hundred five thousand, eight hundred one".