28737840890911 has 2 divisors, whose sum is σ = 28737840890912. Its totient is φ = 28737840890910.

The previous prime is 28737840890879. The next prime is 28737840890921. The reversal of 28737840890911 is 11909804873782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28737840890911 - 2⁵ = 28737840890879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28737840890921) 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, 14368920445455 + 14368920445456.

It is an arithmetic number, because the mean of its divisors is an integer number (14368920445456).

Almost surely, 2^{28737840890911} is an apocalyptic number.

28737840890911 is a deficient number, since it is larger than the sum of its proper divisors (1).

28737840890911 is an equidigital number, since it uses as much as digits as its factorization.

28737840890911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48771072, while the sum is 67.

The spelling of 28737840890911 in words is "twenty-eight trillion, seven hundred thirty-seven billion, eight hundred forty million, eight hundred ninety thousand, nine hundred eleven".