26109253481 has 2 divisors, whose sum is σ = 26109253482. Its totient is φ = 26109253480.

The previous prime is 26109253433. The next prime is 26109253487. The reversal of 26109253481 is 18435290162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25766670400 + 342583081 = 160520^2 + 18509^2 .

It is a cyclic number.

It is not a de Polignac number, because 26109253481 - 2¹⁰ = 26109252457 is a prime.

It is a super-2 number, since 2×26109253481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26109253487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13054626740 + 13054626741.

It is an arithmetic number, because the mean of its divisors is an integer number (13054626741).

Almost surely, 2^26109253481 is an apocalyptic number.

It is an amenable number.

26109253481 is a deficient number, since it is larger than the sum of its proper divisors (1).

26109253481 is an equidigital number, since it uses as much as digits as its factorization.

26109253481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 26109253481 in words is "twenty-six billion, one hundred nine million, two hundred fifty-three thousand, four hundred eighty-one".