26611463605 has 4 divisors (see below), whose sum is σ = 31933756332. Its totient is φ = 21289170880.

The previous prime is 26611463603. The next prime is 26611463609. The reversal of 26611463605 is 50636411662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20362719204 + 6248744401 = 142698^2 + 79049^2 .

It is not a de Polignac number, because 26611463605 - 2¹ = 26611463603 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26611463603) 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, 2661146356 + ... + 2661146365.

It is an arithmetic number, because the mean of its divisors is an integer number (7983439083).

Almost surely, 2^26611463605 is an apocalyptic number.

It is an amenable number.

26611463605 is a deficient number, since it is larger than the sum of its proper divisors (5322292727).

26611463605 is an equidigital number, since it uses as much as digits as its factorization.

26611463605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5322292726.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 26611463605 in words is "twenty-six billion, six hundred eleven million, four hundred sixty-three thousand, six hundred five".