26501120011 has 4 divisors (see below), whose sum is σ = 26560143000. Its totient is φ = 26442097024.

The previous prime is 26501119963. The next prime is 26501120039. The reversal of 26501120011 is 11002110562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11002110562 = 2 ⋅5501055281.

It is a cyclic number.

It is not a de Polignac number, because 26501120011 - 2¹⁵ = 26501087243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26501120111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29510821 + ... + 29511718.

It is an arithmetic number, because the mean of its divisors is an integer number (6640035750).

Almost surely, 2^26501120011 is an apocalyptic number.

26501120011 is a deficient number, since it is larger than the sum of its proper divisors (59022989).

26501120011 is an equidigital number, since it uses as much as digits as its factorization.

26501120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59022988.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 26501120011 its reverse (11002110562), we get a palindrome (37503230573).

The spelling of 26501120011 in words is "twenty-six billion, five hundred one million, one hundred twenty thousand, eleven".