26228890819 has 16 divisors (see below), whose sum is σ = 27381201120. Its totient is φ = 25094119680.

The previous prime is 26228890813. The next prime is 26228890873. The reversal of 26228890819 is 91809882262.

It is a cyclic number.

It is not a de Polignac number, because 26228890819 - 2¹⁹ = 26228366531 is a prime.

It is a super-2 number, since 2×26228890819² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26228890819.

It is not an unprimeable number, because it can be changed into a prime (26228890813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1476639 + ... + 1494295.

It is an arithmetic number, because the mean of its divisors is an integer number (1711325070).

Almost surely, 2^26228890819 is an apocalyptic number.

26228890819 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

26228890819 is a deficient number, since it is larger than the sum of its proper divisors (1152310301).

26228890819 is a wasteful number, since it uses less digits than its factorization.

26228890819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18150.

The product of its (nonzero) digits is 1990656, while the sum is 55.

The spelling of 26228890819 in words is "twenty-six billion, two hundred twenty-eight million, eight hundred ninety thousand, eight hundred nineteen".