28874352761 has 2 divisors, whose sum is σ = 28874352762. Its totient is φ = 28874352760.

The previous prime is 28874352739. The next prime is 28874352887. The reversal of 28874352761 is 16725347882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24982963600 + 3891389161 = 158060^2 + 62381^2 .

It is a cyclic number.

It is not a de Polignac number, because 28874352761 - 2¹⁸ = 28874090617 is a prime.

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 (28874352701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14437176380 + 14437176381.

It is an arithmetic number, because the mean of its divisors is an integer number (14437176381).

Almost surely, 2^28874352761 is an apocalyptic number.

It is an amenable number.

28874352761 is a deficient number, since it is larger than the sum of its proper divisors (1).

28874352761 is an equidigital number, since it uses as much as digits as its factorization.

28874352761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4515840, while the sum is 53.

The spelling of 28874352761 in words is "twenty-eight billion, eight hundred seventy-four million, three hundred fifty-two thousand, seven hundred sixty-one".