26506734166 has 16 divisors (see below), whose sum is σ = 44022041280. Its totient is φ = 11868686280.

The previous prime is 26506734161. The next prime is 26506734167. The reversal of 26506734166 is 66143760562.

It is a super-2 number, since 2×26506734166² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26506734161) 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 7 ways as a sum of consecutive naturals, for example, 8989956 + ... + 8992903.

It is an arithmetic number, because the mean of its divisors is an integer number (2751377580).

Almost surely, 2^26506734166 is an apocalyptic number.

26506734166 is a deficient number, since it is larger than the sum of its proper divisors (17515307114).

26506734166 is a wasteful number, since it uses less digits than its factorization.

26506734166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17982939.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 26506734166 in words is "twenty-six billion, five hundred six million, seven hundred thirty-four thousand, one hundred sixty-six".