26897998635 has 24 divisors (see below), whose sum is σ = 47103856800. Its totient is φ = 14197704192.

The previous prime is 26897998601. The next prime is 26897998637. The reversal of 26897998635 is 53689979862.

It is not a de Polignac number, because 26897998635 - 2¹⁵ = 26897965867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26897998637) 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 23 ways as a sum of consecutive naturals, for example, 3076735 + ... + 3085464.

It is an arithmetic number, because the mean of its divisors is an integer number (1962660700).

Almost surely, 2^26897998635 is an apocalyptic number.

26897998635 is a deficient number, since it is larger than the sum of its proper divisors (20205858165).

26897998635 is a wasteful number, since it uses less digits than its factorization.

26897998635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6162307 (or 6162304 counting only the distinct ones).

The product of its digits is 352719360, while the sum is 72.

The spelling of 26897998635 in words is "twenty-six billion, eight hundred ninety-seven million, nine hundred ninety-eight thousand, six hundred thirty-five".