26001668517 has 16 divisors (see below), whose sum is σ = 38743064640. Its totient is φ = 15374230400.

The previous prime is 26001668437. The next prime is 26001668519. The reversal of 26001668517 is 71586610062.

It is a cyclic number.

It is not a de Polignac number, because 26001668517 - 2¹⁰ = 26001667493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26001668519) 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, 9607542 + ... + 9610247.

It is an arithmetic number, because the mean of its divisors is an integer number (2421441540).

Almost surely, 2^26001668517 is an apocalyptic number.

It is an amenable number.

26001668517 is a deficient number, since it is larger than the sum of its proper divisors (12741396123).

26001668517 is a wasteful number, since it uses less digits than its factorization.

26001668517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19217844.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 26001668517 in words is "twenty-six billion, one million, six hundred sixty-eight thousand, five hundred seventeen".