26921679799 has 8 divisors (see below), whose sum is σ = 30768923520. Its totient is φ = 23074758456.

The previous prime is 26921679797. The next prime is 26921679809. The reversal of 26921679799 is 99797612962.

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 26921679799 - 2¹ = 26921679797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26921679797) 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, 137832 + ... + 269890.

It is an arithmetic number, because the mean of its divisors is an integer number (3846115440).

Almost surely, 2^26921679799 is an apocalyptic number.

26921679799 is a deficient number, since it is larger than the sum of its proper divisors (3847243721).

26921679799 is a wasteful number, since it uses less digits than its factorization.

26921679799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161189.

The product of its digits is 46294416, while the sum is 67.

The spelling of 26921679799 in words is "twenty-six billion, nine hundred twenty-one million, six hundred seventy-nine thousand, seven hundred ninety-nine".