26801811172 has 24 divisors (see below), whose sum is σ = 47251496376. Its totient is φ = 13301637888.

The previous prime is 26801811131. The next prime is 26801811181. The reversal of 26801811172 is 27111810862.

It can be written as a sum of positive squares in 4 ways, for example, as 7318118116 + 19483693056 = 85546^2 + 139584^2 .

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, 395578 + ... + 458350.

It is an arithmetic number, because the mean of its divisors is an integer number (1968812349).

Almost surely, 2^26801811172 is an apocalyptic number.

It is an amenable number.

26801811172 is a deficient number, since it is larger than the sum of its proper divisors (20449685204).

26801811172 is a wasteful number, since it uses less digits than its factorization.

26801811172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63567 (or 63565 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 37.

The spelling of 26801811172 in words is "twenty-six billion, eight hundred one million, eight hundred eleven thousand, one hundred seventy-two".