26444060870681 has 6 divisors (see below), whose sum is σ = 28091095804110. Its totient is φ = 24888527878016.

The previous prime is 26444060870641. The next prime is 26444060870713. The reversal of 26444060870681 is 18607806044462.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3696836816656 + 22747224054025 = 1922716^2 + 4769405^2 .

It is not a de Polignac number, because 26444060870681 - 2²² = 26444056676377 is a prime.

It is a super-2 number, since 2×26444060870681² (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 (26444060870641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45750970076 + ... + 45750970653.

It is an arithmetic number, because the mean of its divisors is an integer number (4681849300685).

Almost surely, 2^{26444060870681} is an apocalyptic number.

It is an amenable number.

26444060870681 is a deficient number, since it is larger than the sum of its proper divisors (1647034933429).

26444060870681 is an equidigital number, since it uses as much as digits as its factorization.

26444060870681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91501940763 (or 91501940746 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 56.

The spelling of 26444060870681 in words is "twenty-six trillion, four hundred forty-four billion, sixty million, eight hundred seventy thousand, six hundred eighty-one".