26011784889 has 12 divisors (see below), whose sum is σ = 37576918756. Its totient is φ = 17339186592.

The previous prime is 26011784879. The next prime is 26011784893. The reversal of 26011784889 is 98848711062.

It can be written as a sum of positive squares in 2 ways, for example, as 4083210000 + 21928574889 = 63900^2 + 148083^2 .

It is not a de Polignac number, because 26011784889 - 2¹⁶ = 26011719353 is a prime.

It is a super-2 number, since 2×26011784889² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26011784879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82462 + ... + 242535.

Almost surely, 2^26011784889 is an apocalyptic number.

It is an amenable number.

26011784889 is a deficient number, since it is larger than the sum of its proper divisors (11565133867).

26011784889 is a wasteful number, since it uses less digits than its factorization.

26011784889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333896 (or 333893 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The spelling of 26011784889 in words is "twenty-six billion, eleven million, seven hundred eighty-four thousand, eight hundred eighty-nine".