28424787451 has 2 divisors, whose sum is σ = 28424787452. Its totient is φ = 28424787450.

The previous prime is 28424787431. The next prime is 28424787509. The reversal of 28424787451 is 15478742482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28424787451 - 2¹⁹ = 28424263163 is a prime.

It is not a weakly prime, because it can be changed into another prime (28424787421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14212393725 + 14212393726.

It is an arithmetic number, because the mean of its divisors is an integer number (14212393726).

Almost surely, 2^28424787451 is an apocalyptic number.

28424787451 is a deficient number, since it is larger than the sum of its proper divisors (1).

28424787451 is an equidigital number, since it uses as much as digits as its factorization.

28424787451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4014080, while the sum is 52.

The spelling of 28424787451 in words is "twenty-eight billion, four hundred twenty-four million, seven hundred eighty-seven thousand, four hundred fifty-one".