26556776432129 has 16 divisors (see below), whose sum is σ = 28165588894080. Its totient is φ = 24953150734080.

The previous prime is 26556776432117. The next prime is 26556776432149. The reversal of 26556776432129 is 92123467765562.

It is a cyclic number.

It is not a de Polignac number, because 26556776432129 - 2²⁴ = 26556759654913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26556776432149) by changing a digit.

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, 346515644 + ... + 346592274.

It is an arithmetic number, because the mean of its divisors is an integer number (1760349305880).

Almost surely, 2^{26556776432129} is an apocalyptic number.

It is an amenable number.

26556776432129 is a deficient number, since it is larger than the sum of its proper divisors (1608812461951).

26556776432129 is a wasteful number, since it uses less digits than its factorization.

26556776432129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110200.

The product of its digits is 228614400, while the sum is 65.

The spelling of 26556776432129 in words is "twenty-six trillion, five hundred fifty-six billion, seven hundred seventy-six million, four hundred thirty-two thousand, one hundred twenty-nine".