28059551801 has 8 divisors (see below), whose sum is σ = 28103504520. Its totient is φ = 28015625088.

The previous prime is 28059551797. The next prime is 28059551803. The reversal of 28059551801 is 10815595082.

It can be written as a sum of positive squares in 4 ways, for example, as 1804210576 + 26255341225 = 42476^2 + 162035^2 .

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 28059551801 - 2² = 28059551797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28059551803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3558275 + ... + 3566151.

It is an arithmetic number, because the mean of its divisors is an integer number (3512938065).

Almost surely, 2^28059551801 is an apocalyptic number.

It is an amenable number.

28059551801 is a deficient number, since it is larger than the sum of its proper divisors (43952719).

28059551801 is an equidigital number, since it uses as much as digits as its factorization.

28059551801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13003.

The product of its (nonzero) digits is 144000, while the sum is 44.

The spelling of 28059551801 in words is "twenty-eight billion, fifty-nine million, five hundred fifty-one thousand, eight hundred one".