26720786211 has 16 divisors (see below), whose sum is σ = 42860409600. Its totient is φ = 14465387808.

The previous prime is 26720786159. The next prime is 26720786233. The reversal of 26720786211 is 11268702762.

It is not a de Polignac number, because 26720786211 - 2¹⁸ = 26720524067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26720786311) 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 in 15 ways as a sum of consecutive naturals, for example, 33484296 + ... + 33485093.

It is an arithmetic number, because the mean of its divisors is an integer number (2678775600).

Almost surely, 2^26720786211 is an apocalyptic number.

26720786211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

26720786211 is a deficient number, since it is larger than the sum of its proper divisors (16139623389).

26720786211 is a wasteful number, since it uses less digits than its factorization.

26720786211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66969418.

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 26720786211 in words is "twenty-six billion, seven hundred twenty million, seven hundred eighty-six thousand, two hundred eleven".