28151463281 has 2 divisors, whose sum is σ = 28151463282. Its totient is φ = 28151463280.

The previous prime is 28151463251. The next prime is 28151463311. The reversal of 28151463281 is 18236415182.

It is a balanced prime because it is at equal distance from previous prime (28151463251) and next prime (28151463311).

It can be written as a sum of positive squares in only one way, i.e., 22213219681 + 5938243600 = 149041^2 + 77060^2 .

It is a cyclic number.

It is not a de Polignac number, because 28151463281 - 2³⁴ = 10971594097 is a prime.

It is a super-2 number, since 2×28151463281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28151463251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14075731640 + 14075731641.

It is an arithmetic number, because the mean of its divisors is an integer number (14075731641).

Almost surely, 2^28151463281 is an apocalyptic number.

It is an amenable number.

28151463281 is a deficient number, since it is larger than the sum of its proper divisors (1).

28151463281 is an equidigital number, since it uses as much as digits as its factorization.

28151463281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 41.

The spelling of 28151463281 in words is "twenty-eight billion, one hundred fifty-one million, four hundred sixty-three thousand, two hundred eighty-one".