26105255604 has 18 divisors (see below), whose sum is σ = 65988285090. Its totient is φ = 8701751856.

The previous prime is 26105255597. The next prime is 26105255639. The reversal of 26105255604 is 40655250162.

26105255604 is a `hidden beast` number, since 26 + 1 + 0 + 5 + 25 + 5 + 604 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14628418704 + 11476836900 = 120948^2 + 107130^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 725145989 = 26105255604 / (2 + 6 + 1 + 0 + 5 + 2 + 5 + 5 + 6 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 362572959 + ... + 362573030.

Almost surely, 2^26105255604 is an apocalyptic number.

It is an amenable number.

26105255604 is an abundant number, since it is smaller than the sum of its proper divisors (39883029486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26105255604 is a wasteful number, since it uses less digits than its factorization.

26105255604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725145999 (or 725145994 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 26105255604 in words is "twenty-six billion, one hundred five million, two hundred fifty-five thousand, six hundred four".