26155504865 has 16 divisors (see below), whose sum is σ = 36704604288. Its totient is φ = 17518104576.

The previous prime is 26155504829. The next prime is 26155504871. The reversal of 26155504865 is 56840555162.

It is not a de Polignac number, because 26155504865 - 2⁶ = 26155504801 is a prime.

It is a super-2 number, since 2×26155504865² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 8688032 + ... + 8691041.

It is an arithmetic number, because the mean of its divisors is an integer number (2294037768).

Almost surely, 2^26155504865 is an apocalyptic number.

It is an amenable number.

26155504865 is a deficient number, since it is larger than the sum of its proper divisors (10549099423).

26155504865 is a wasteful number, since it uses less digits than its factorization.

26155504865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17379128.

The product of its (nonzero) digits is 1440000, while the sum is 47.

The spelling of 26155504865 in words is "twenty-six billion, one hundred fifty-five million, five hundred four thousand, eight hundred sixty-five".