28011773567 has 2 divisors, whose sum is σ = 28011773568. Its totient is φ = 28011773566.

The previous prime is 28011773563. The next prime is 28011773617. The reversal of 28011773567 is 76537711082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28011773567 - 2² = 28011773563 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28011773563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14005886783 + 14005886784.

It is an arithmetic number, because the mean of its divisors is an integer number (14005886784).

Almost surely, 2^28011773567 is an apocalyptic number.

28011773567 is a deficient number, since it is larger than the sum of its proper divisors (1).

28011773567 is an equidigital number, since it uses as much as digits as its factorization.

28011773567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 493920, while the sum is 47.

The spelling of 28011773567 in words is "twenty-eight billion, eleven million, seven hundred seventy-three thousand, five hundred sixty-seven".