26100056405 has 16 divisors (see below), whose sum is σ = 32405011200. Its totient is φ = 20156969280.

The previous prime is 26100056399. The next prime is 26100056407. The reversal of 26100056405 is 50465000162.

It is not a de Polignac number, because 26100056405 - 2¹⁶ = 26099990869 is a prime.

It is a super-3 number, since 3×26100056405³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26100056407) 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, 1562186 + ... + 1578804.

It is an arithmetic number, because the mean of its divisors is an integer number (2025313200).

Almost surely, 2^26100056405 is an apocalyptic number.

It is an amenable number.

26100056405 is a deficient number, since it is larger than the sum of its proper divisors (6304954795).

26100056405 is a wasteful number, since it uses less digits than its factorization.

26100056405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27484.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 26100056405 its reverse (50465000162), we get a palindrome (76565056567).

The spelling of 26100056405 in words is "twenty-six billion, one hundred million, fifty-six thousand, four hundred five".