28545268987 has 2 divisors, whose sum is σ = 28545268988. Its totient is φ = 28545268986.

The previous prime is 28545268979. The next prime is 28545269017. The reversal of 28545268987 is 78986254582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28545268987 - 2³ = 28545268979 is a prime.

It is not a weakly prime, because it can be changed into another prime (28545268957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14272634493 + 14272634494.

It is an arithmetic number, because the mean of its divisors is an integer number (14272634494).

Almost surely, 2^28545268987 is an apocalyptic number.

28545268987 is a deficient number, since it is larger than the sum of its proper divisors (1).

28545268987 is an equidigital number, since it uses as much as digits as its factorization.

28545268987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77414400, while the sum is 64.

The spelling of 28545268987 in words is "twenty-eight billion, five hundred forty-five million, two hundred sixty-eight thousand, nine hundred eighty-seven".