28043735866403 has 2 divisors, whose sum is σ = 28043735866404. Its totient is φ = 28043735866402.

The previous prime is 28043735866373. The next prime is 28043735866451. The reversal of 28043735866403 is 30466853734082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28043735866403 - 2⁶ = 28043735866339 is a prime.

It is a super-2 number, since 2×28043735866403² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28043735866483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14021867933201 + 14021867933202.

It is an arithmetic number, because the mean of its divisors is an integer number (14021867933202).

Almost surely, 2^{28043735866403} is an apocalyptic number.

28043735866403 is a deficient number, since it is larger than the sum of its proper divisors (1).

28043735866403 is an equidigital number, since it uses as much as digits as its factorization.

28043735866403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69672960, while the sum is 59.

The spelling of 28043735866403 in words is "twenty-eight trillion, forty-three billion, seven hundred thirty-five million, eight hundred sixty-six thousand, four hundred three".