26040351115217 has 4 divisors (see below), whose sum is σ = 26645940676080. Its totient is φ = 25434761554356.

The previous prime is 26040351115157. The next prime is 26040351115297. The reversal of 26040351115217 is 71251115304062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26040351115217 - 2¹² = 26040351111121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26040351115297) 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, 302794780367 + ... + 302794780452.

It is an arithmetic number, because the mean of its divisors is an integer number (6661485169020).

Almost surely, 2^{26040351115217} is an apocalyptic number.

It is an amenable number.

26040351115217 is a deficient number, since it is larger than the sum of its proper divisors (605589560863).

26040351115217 is an equidigital number, since it uses as much as digits as its factorization.

26040351115217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605589560862.

The product of its (nonzero) digits is 50400, while the sum is 38.

Adding to 26040351115217 its reverse (71251115304062), we get a palindrome (97291466419279).

The spelling of 26040351115217 in words is "twenty-six trillion, forty billion, three hundred fifty-one million, one hundred fifteen thousand, two hundred seventeen".