28081803767 has 2 divisors, whose sum is σ = 28081803768. Its totient is φ = 28081803766.

The previous prime is 28081803691. The next prime is 28081803797. The reversal of 28081803767 is 76730818082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28081803767 - 2³² = 23786836471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28081803797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14040901883 + 14040901884.

It is an arithmetic number, because the mean of its divisors is an integer number (14040901884).

Almost surely, 2^28081803767 is an apocalyptic number.

28081803767 is a deficient number, since it is larger than the sum of its proper divisors (1).

28081803767 is an equidigital number, since it uses as much as digits as its factorization.

28081803767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 903168, while the sum is 50.

The spelling of 28081803767 in words is "twenty-eight billion, eighty-one million, eight hundred three thousand, seven hundred sixty-seven".