26897998208 has 16 divisors (see below), whose sum is σ = 53585856060. Its totient is φ = 13448999040.

The previous prime is 26897998201. The next prime is 26897998219. The reversal of 26897998208 is 80289979862.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×26897998208² (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 (26897998201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105070178 + ... + 105070433.

Almost surely, 2^26897998208 is an apocalyptic number.

It is an amenable number.

26897998208 is a deficient number, since it is larger than the sum of its proper divisors (26687857852).

26897998208 is an equidigital number, since it uses as much as digits as its factorization.

26897998208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210140625 (or 210140613 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 68.

The spelling of 26897998208 in words is "twenty-six billion, eight hundred ninety-seven million, nine hundred ninety-eight thousand, two hundred eight".