28670440801 has 2 divisors, whose sum is σ = 28670440802. Its totient is φ = 28670440800.

The previous prime is 28670440753. The next prime is 28670440807. The reversal of 28670440801 is 10804407682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14604480801 + 14065960000 = 120849^2 + 118600^2 .

It is a cyclic number.

It is not a de Polignac number, because 28670440801 - 2¹⁷ = 28670309729 is a prime.

It is not a weakly prime, because it can be changed into another prime (28670440807) 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, 14335220400 + 14335220401.

It is an arithmetic number, because the mean of its divisors is an integer number (14335220401).

Almost surely, 2^28670440801 is an apocalyptic number.

It is an amenable number.

28670440801 is a deficient number, since it is larger than the sum of its proper divisors (1).

28670440801 is an equidigital number, since it uses as much as digits as its factorization.

28670440801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 28670440801 in words is "twenty-eight billion, six hundred seventy million, four hundred forty thousand, eight hundred one".