26265216664 has 16 divisors (see below), whose sum is σ = 49249372320. Its totient is φ = 13132050720.

The previous prime is 26265216661. The next prime is 26265216671. The reversal of 26265216664 is 46661256262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26265216661) 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 3 ways as a sum of consecutive naturals, for example, 185409 + ... + 294799.

It is an arithmetic number, because the mean of its divisors is an integer number (3078085770).

Almost surely, 2^26265216664 is an apocalyptic number.

It is an amenable number.

26265216664 is a deficient number, since it is larger than the sum of its proper divisors (22984155656).

26265216664 is a wasteful number, since it uses less digits than its factorization.

26265216664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139410 (or 139406 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 46.

The spelling of 26265216664 in words is "twenty-six billion, two hundred sixty-five million, two hundred sixteen thousand, six hundred sixty-four".