26778804019 has 8 divisors (see below), whose sum is σ = 29565208512. Its totient is φ = 24051060840.

The previous prime is 26778804011. The next prime is 26778804047. The reversal of 26778804019 is 91040887762.

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 26778804019 - 2³ = 26778804011 is a prime.

It is a super-2 number, since 2×26778804019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26778804011) 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, 14664369 + ... + 14666194.

It is an arithmetic number, because the mean of its divisors is an integer number (3695651064).

Almost surely, 2^26778804019 is an apocalyptic number.

26778804019 is a deficient number, since it is larger than the sum of its proper divisors (2786404493).

26778804019 is a wasteful number, since it uses less digits than its factorization.

26778804019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29330657.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 26778804019 in words is "twenty-six billion, seven hundred seventy-eight million, eight hundred four thousand, nineteen".