26517078907 has 16 divisors (see below), whose sum is σ = 30712891392. Its totient is φ = 22626529920.

The previous prime is 26517078901. The next prime is 26517078989. The reversal of 26517078907 is 70987071562.

It is a cyclic number.

It is not a de Polignac number, because 26517078907 - 2¹⁹ = 26516554619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26517078901) 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 15 ways as a sum of consecutive naturals, for example, 124563 + ... + 261820.

It is an arithmetic number, because the mean of its divisors is an integer number (1919555712).

Almost surely, 2^26517078907 is an apocalyptic number.

26517078907 is a deficient number, since it is larger than the sum of its proper divisors (4195812485).

26517078907 is a wasteful number, since it uses less digits than its factorization.

26517078907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386778.

The product of its (nonzero) digits is 1481760, while the sum is 52.

The spelling of 26517078907 in words is "twenty-six billion, five hundred seventeen million, seventy-eight thousand, nine hundred seven".