28075622401 has 2 divisors, whose sum is σ = 28075622402. Its totient is φ = 28075622400.

The previous prime is 28075622389. The next prime is 28075622429. The reversal of 28075622401 is 10422657082.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27265935376 + 809687025 = 165124^2 + 28455^2 .

It is a cyclic number.

It is not a de Polignac number, because 28075622401 - 2⁷ = 28075622273 is a prime.

It is not a weakly prime, because it can be changed into another prime (28075622431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14037811200 + 14037811201.

It is an arithmetic number, because the mean of its divisors is an integer number (14037811201).

It is a Proth number, since it is equal to 26775 ⋅ 2²⁰ + 1 and 26775 < 2²⁰.

Almost surely, 2^28075622401 is an apocalyptic number.

It is an amenable number.

28075622401 is a deficient number, since it is larger than the sum of its proper divisors (1).

28075622401 is an equidigital number, since it uses as much as digits as its factorization.

28075622401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 28075622401 in words is "twenty-eight billion, seventy-five million, six hundred twenty-two thousand, four hundred one".