28322872801 has 2 divisors, whose sum is σ = 28322872802. Its totient is φ = 28322872800.

The previous prime is 28322872793. The next prime is 28322872811. The reversal of 28322872801 is 10827822382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24071832801 + 4251040000 = 155151^2 + 65200^2 .

It is a cyclic number.

It is not a de Polignac number, because 28322872801 - 2³ = 28322872793 is a prime.

It is not a weakly prime, because it can be changed into another prime (28322872811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14161436400 + 14161436401.

It is an arithmetic number, because the mean of its divisors is an integer number (14161436401).

Almost surely, 2^28322872801 is an apocalyptic number.

It is an amenable number.

28322872801 is a deficient number, since it is larger than the sum of its proper divisors (1).

28322872801 is an equidigital number, since it uses as much as digits as its factorization.

28322872801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 28322872801 in words is "twenty-eight billion, three hundred twenty-two million, eight hundred seventy-two thousand, eight hundred one".