26440463305 has 8 divisors (see below), whose sum is σ = 31748139144. Its totient is φ = 21139315200.

The previous prime is 26440463299. The next prime is 26440463321. The reversal of 26440463305 is 50336404462.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6524762176 + 19915701129 = 80776^2 + 141123^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26440463305 - 2³ = 26440463297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1623016 + ... + 1639225.

It is an arithmetic number, because the mean of its divisors is an integer number (3968517393).

Almost surely, 2^26440463305 is an apocalyptic number.

It is an amenable number.

26440463305 is a deficient number, since it is larger than the sum of its proper divisors (5307675839).

26440463305 is a wasteful number, since it uses less digits than its factorization.

26440463305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263867.

The product of its (nonzero) digits is 207360, while the sum is 37.

Adding to 26440463305 its reverse (50336404462), we get a palindrome (76776867767).

The spelling of 26440463305 in words is "twenty-six billion, four hundred forty million, four hundred sixty-three thousand, three hundred five".