26940818639 has 8 divisors (see below), whose sum is σ = 30887878560. Its totient is φ = 23018351616.

The previous prime is 26940818633. The next prime is 26940818711. The reversal of 26940818639 is 93681804962.

It is a happy number.

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 26940818639 - 2⁸ = 26940818383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26940818633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6145874 + ... + 6150255.

It is an arithmetic number, because the mean of its divisors is an integer number (3860984820).

Almost surely, 2^26940818639 is an apocalyptic number.

26940818639 is a deficient number, since it is larger than the sum of its proper divisors (3947059921).

26940818639 is a wasteful number, since it uses less digits than its factorization.

26940818639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12296449.

The product of its (nonzero) digits is 4478976, while the sum is 56.

The spelling of 26940818639 in words is "twenty-six billion, nine hundred forty million, eight hundred eighteen thousand, six hundred thirty-nine".