28351756801 has 2 divisors, whose sum is σ = 28351756802. Its totient is φ = 28351756800.

The previous prime is 28351756799. The next prime is 28351756819. The reversal of 28351756801 is 10865715382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19628010000 + 8723746801 = 140100^2 + 93401^2 .

It is a cyclic number.

It is not a de Polignac number, because 28351756801 - 2¹ = 28351756799 is a prime.

It is a super-2 number, since 2×28351756801² (a number of 22 digits) contains 22 as substring.

Together with 28351756799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28351756861) by changing a digit.

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 as a sum of consecutive naturals, namely, 14175878400 + 14175878401.

It is an arithmetic number, because the mean of its divisors is an integer number (14175878401).

Almost surely, 2^28351756801 is an apocalyptic number.

It is an amenable number.

28351756801 is a deficient number, since it is larger than the sum of its proper divisors (1).

28351756801 is an equidigital number, since it uses as much as digits as its factorization.

28351756801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 28351756801 in words is "twenty-eight billion, three hundred fifty-one million, seven hundred fifty-six thousand, eight hundred one".