28614445481 has 2 divisors, whose sum is σ = 28614445482. Its totient is φ = 28614445480.

The previous prime is 28614445427. The next prime is 28614445501. The reversal of 28614445481 is 18454441682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25085491456 + 3528954025 = 158384^2 + 59405^2 .

It is a cyclic number.

It is not a de Polignac number, because 28614445481 - 2¹⁸ = 28614183337 is a prime.

It is a super-2 number, since 2×28614445481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28614405481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14307222740 + 14307222741.

It is an arithmetic number, because the mean of its divisors is an integer number (14307222741).

Almost surely, 2^28614445481 is an apocalyptic number.

It is an amenable number.

28614445481 is a deficient number, since it is larger than the sum of its proper divisors (1).

28614445481 is an equidigital number, since it uses as much as digits as its factorization.

28614445481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 983040, while the sum is 47.

The spelling of 28614445481 in words is "twenty-eight billion, six hundred fourteen million, four hundred forty-five thousand, four hundred eighty-one".