26557264811 has 32 divisors (see below), whose sum is σ = 33619968000. Its totient is φ = 20376888480.

The previous prime is 26557264771. The next prime is 26557264813. The reversal of 26557264811 is 11846275562.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26557264811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26557264813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2324090 + ... + 2335488.

It is an arithmetic number, because the mean of its divisors is an integer number (1050624000).

Almost surely, 2^26557264811 is an apocalyptic number.

26557264811 is a deficient number, since it is larger than the sum of its proper divisors (7062703189).

26557264811 is a wasteful number, since it uses less digits than its factorization.

26557264811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11879.

The product of its digits is 806400, while the sum is 47.

The spelling of 26557264811 in words is "twenty-six billion, five hundred fifty-seven million, two hundred sixty-four thousand, eight hundred eleven".