28351911801 has 8 divisors (see below), whose sum is σ = 37805058720. Its totient is φ = 18900019712.

The previous prime is 28351911793. The next prime is 28351911827. The reversal of 28351911801 is 10811915382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28351911801 - 2³ = 28351911793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28351911801.

It is not an unprimeable number, because it can be changed into a prime (28351901801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259656 + ... + 352313.

It is an arithmetic number, because the mean of its divisors is an integer number (4725632340).

Almost surely, 2^28351911801 is an apocalyptic number.

It is an amenable number.

28351911801 is a deficient number, since it is larger than the sum of its proper divisors (9453146919).

28351911801 is a wasteful number, since it uses less digits than its factorization.

28351911801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627415.

The product of its (nonzero) digits is 17280, while the sum is 39.

The spelling of 28351911801 in words is "twenty-eight billion, three hundred fifty-one million, nine hundred eleven thousand, eight hundred one".