26087442437761 has 4 divisors (see below), whose sum is σ = 26087468863300. Its totient is φ = 26087416012224.

The previous prime is 26087442437753. The next prime is 26087442437831. The reversal of 26087442437761 is 16773424478062.

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 7937286347761 + 18150156090000 = 2817319^2 + 4260300^2 .

It is a cyclic number.

It is not a de Polignac number, because 26087442437761 - 2³ = 26087442437753 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26087442437761.

It is not an unprimeable number, because it can be changed into a prime (26087442431761) 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, 11672076 + ... + 13726333.

It is an arithmetic number, because the mean of its divisors is an integer number (6521867215825).

Almost surely, 2^{26087442437761} is an apocalyptic number.

It is an amenable number.

26087442437761 is a deficient number, since it is larger than the sum of its proper divisors (26425539).

26087442437761 is a wasteful number, since it uses less digits than its factorization.

26087442437761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26425538.

The product of its (nonzero) digits is 75866112, while the sum is 61.

The spelling of 26087442437761 in words is "twenty-six trillion, eighty-seven billion, four hundred forty-two million, four hundred thirty-seven thousand, seven hundred sixty-one".