26961975513 has 24 divisors (see below), whose sum is σ = 42564153216. Its totient is φ = 16310354400.

The previous prime is 26961975493. The next prime is 26961975527. The reversal of 26961975513 is 31557916962.

26961975513 is a `hidden beast` number, since 2 + 6 + 9 + 619 + 7 + 5 + 5 + 13 = 666.

It is not a de Polignac number, because 26961975513 - 2¹⁰ = 26961974489 is a prime.

It is a super-2 number, since 2×26961975513² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 26961975513.

It is not an unprimeable number, because it can be changed into a prime (26961973513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198145 + ... + 305262.

It is an arithmetic number, because the mean of its divisors is an integer number (1773506384).

Almost surely, 2^26961975513 is an apocalyptic number.

It is an amenable number.

26961975513 is a deficient number, since it is larger than the sum of its proper divisors (15602177703).

26961975513 is a wasteful number, since it uses less digits than its factorization.

26961975513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503965 (or 503962 counting only the distinct ones).

The product of its digits is 3061800, while the sum is 54.

The spelling of 26961975513 in words is "twenty-six billion, nine hundred sixty-one million, nine hundred seventy-five thousand, five hundred thirteen".