26120781442289 has 4 divisors (see below), whose sum is σ = 26128187394624. Its totient is φ = 26113375489956.

The previous prime is 26120781442243. The next prime is 26120781442303. The reversal of 26120781442289 is 98224418702162.

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 26120781442289 - 2³² = 26116486474993 is a prime.

It is a super-2 number, since 2×26120781442289² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26120781442219) 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, 3702970877 + ... + 3702977930.

It is an arithmetic number, because the mean of its divisors is an integer number (6532046848656).

Almost surely, 2^{26120781442289} is an apocalyptic number.

It is an amenable number.

26120781442289 is a deficient number, since it is larger than the sum of its proper divisors (7405952335).

26120781442289 is an equidigital number, since it uses as much as digits as its factorization.

26120781442289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7405952334.

The product of its (nonzero) digits is 6193152, while the sum is 56.

The spelling of 26120781442289 in words is "twenty-six trillion, one hundred twenty billion, seven hundred eighty-one million, four hundred forty-two thousand, two hundred eighty-nine".