26994638909 has 8 divisors (see below), whose sum is σ = 30870893760. Its totient is φ = 23123353536.

The previous prime is 26994638899. The next prime is 26994638933. The reversal of 26994638909 is 90983649962.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26994638909 - 2¹² = 26994634813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26994638999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1230719 + ... + 1252460.

It is an arithmetic number, because the mean of its divisors is an integer number (3858861720).

Almost surely, 2^26994638909 is an apocalyptic number.

It is an amenable number.

26994638909 is a deficient number, since it is larger than the sum of its proper divisors (3876254851).

26994638909 is a wasteful number, since it uses less digits than its factorization.

26994638909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484739.

The product of its (nonzero) digits is 45349632, while the sum is 65.

The spelling of 26994638909 in words is "twenty-six billion, nine hundred ninety-four million, six hundred thirty-eight thousand, nine hundred nine".