26988339601 has 4 divisors (see below), whose sum is σ = 26990837172. Its totient is φ = 26985842032.

The previous prime is 26988339563. The next prime is 26988339709. The reversal of 26988339601 is 10693388962.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10693388962 = 2 ⋅5346694481.

It can be written as a sum of positive squares in 2 ways, for example, as 14429775376 + 12558564225 = 120124^2 + 112065^2 .

It is a cyclic number.

It is not a de Polignac number, because 26988339601 - 2⁷ = 26988339473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26988339101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1232506 + ... + 1254211.

It is an arithmetic number, because the mean of its divisors is an integer number (6747709293).

Almost surely, 2^26988339601 is an apocalyptic number.

It is an amenable number.

26988339601 is a deficient number, since it is larger than the sum of its proper divisors (2497571).

26988339601 is a wasteful number, since it uses less digits than its factorization.

26988339601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497570.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 26988339601 in words is "twenty-six billion, nine hundred eighty-eight million, three hundred thirty-nine thousand, six hundred one".