28081455767 has 2 divisors, whose sum is σ = 28081455768. Its totient is φ = 28081455766.

The previous prime is 28081455761. The next prime is 28081455811. The reversal of 28081455767 is 76755418082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28081455767 - 2²² = 28077261463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28081455761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14040727883 + 14040727884.

It is an arithmetic number, because the mean of its divisors is an integer number (14040727884).

Almost surely, 2^28081455767 is an apocalyptic number.

28081455767 is a deficient number, since it is larger than the sum of its proper divisors (1).

28081455767 is an equidigital number, since it uses as much as digits as its factorization.

28081455767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3763200, while the sum is 53.

The spelling of 28081455767 in words is "twenty-eight billion, eighty-one million, four hundred fifty-five thousand, seven hundred sixty-seven".