28041880787 has 2 divisors, whose sum is σ = 28041880788. Its totient is φ = 28041880786.

The previous prime is 28041880777. The next prime is 28041880819. The reversal of 28041880787 is 78708814082.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28041880787 is a prime.

It is not a weakly prime, because it can be changed into another prime (28041880747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14020940393 + 14020940394.

It is an arithmetic number, because the mean of its divisors is an integer number (14020940394).

Almost surely, 2^28041880787 is an apocalyptic number.

28041880787 is a deficient number, since it is larger than the sum of its proper divisors (1).

28041880787 is an equidigital number, since it uses as much as digits as its factorization.

28041880787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1605632, while the sum is 53.

The spelling of 28041880787 in words is "twenty-eight billion, forty-one million, eight hundred eighty thousand, seven hundred eighty-seven".