26005600664055 has 64 divisors (see below), whose sum is σ = 46619508096000. Its totient is φ = 13753849576320.

The previous prime is 26005600663901. The next prime is 26005600664081. The reversal of 26005600664055 is 55046600650062.

It is a happy number.

26005600664055 is a `hidden beast` number, since 26 + 0 + 0 + 560 + 0 + 6 + 64 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 26005600664055 - 2¹³ = 26005600655863 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 26005600664055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8121496 + ... + 10861394.

It is an arithmetic number, because the mean of its divisors is an integer number (728429814000).

Almost surely, 2^{26005600664055} is an apocalyptic number.

26005600664055 is a deficient number, since it is larger than the sum of its proper divisors (20613907431945).

26005600664055 is a wasteful number, since it uses less digits than its factorization.

26005600664055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740501 (or 2740495 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 26005600664055 in words is "twenty-six trillion, five billion, six hundred million, six hundred sixty-four thousand, fifty-five".