28362277481 has 2 divisors, whose sum is σ = 28362277482. Its totient is φ = 28362277480.

The previous prime is 28362277459. The next prime is 28362277543. The reversal of 28362277481 is 18477226382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28338355600 + 23921881 = 168340^2 + 4891^2 .

It is a cyclic number.

It is not a de Polignac number, because 28362277481 - 2²⁶ = 28295168617 is a prime.

It is a super-2 number, since 2×28362277481² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28362274481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14181138740 + 14181138741.

It is an arithmetic number, because the mean of its divisors is an integer number (14181138741).

Almost surely, 2^28362277481 is an apocalyptic number.

It is an amenable number.

28362277481 is a deficient number, since it is larger than the sum of its proper divisors (1).

28362277481 is an equidigital number, since it uses as much as digits as its factorization.

28362277481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1806336, while the sum is 50.

The spelling of 28362277481 in words is "twenty-eight billion, three hundred sixty-two million, two hundred seventy-seven thousand, four hundred eighty-one".