26890840884409 has 8 divisors (see below), whose sum is σ = 26912146137408. Its totient is φ = 26869536610800.

The previous prime is 26890840884359. The next prime is 26890840884421. The reversal of 26890840884409 is 90448804809862.

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 26890840884409 - 2²¹ = 26890838787257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26890840884469) 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, 60675114 + ... + 61116700.

It is an arithmetic number, because the mean of its divisors is an integer number (3364018267176).

Almost surely, 2^{26890840884409} is an apocalyptic number.

It is an amenable number.

26890840884409 is a deficient number, since it is larger than the sum of its proper divisors (21305252999).

26890840884409 is a wasteful number, since it uses less digits than its factorization.

26890840884409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489695.

The product of its (nonzero) digits is 254803968, while the sum is 70.

The spelling of 26890840884409 in words is "twenty-six trillion, eight hundred ninety billion, eight hundred forty million, eight hundred eighty-four thousand, four hundred nine".