26749566212 has 6 divisors (see below), whose sum is σ = 46811740878. Its totient is φ = 13374783104.

The previous prime is 26749566199. The next prime is 26749566247. The reversal of 26749566212 is 21266594762.

It can be written as a sum of positive squares in only one way, i.e., 24190825156 + 2558741056 = 155534^2 + 50584^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3343695773 + ... + 3343695780.

It is an arithmetic number, because the mean of its divisors is an integer number (7801956813).

Almost surely, 2^26749566212 is an apocalyptic number.

It is an amenable number.

26749566212 is a deficient number, since it is larger than the sum of its proper divisors (20062174666).

26749566212 is a wasteful number, since it uses less digits than its factorization.

26749566212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6687391557 (or 6687391555 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 50.

The spelling of 26749566212 in words is "twenty-six billion, seven hundred forty-nine million, five hundred sixty-six thousand, two hundred twelve".