26511116543 has 12 divisors (see below), whose sum is σ = 27935218800. Its totient is φ = 25112029536.

The previous prime is 26511116539. The next prime is 26511116549. The reversal of 26511116543 is 34561111562.

It is not a de Polignac number, because 26511116543 - 2² = 26511116539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26511116549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189683 + ... + 298331.

It is an arithmetic number, because the mean of its divisors is an integer number (2327934900).

Almost surely, 2^26511116543 is an apocalyptic number.

26511116543 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

26511116543 is a deficient number, since it is larger than the sum of its proper divisors (1424102257).

26511116543 is a wasteful number, since it uses less digits than its factorization.

26511116543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108878 (or 108775 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The spelling of 26511116543 in words is "twenty-six billion, five hundred eleven million, one hundred sixteen thousand, five hundred forty-three".