26890008222861 has 48 divisors (see below), whose sum is σ = 44417305948288. Its totient is φ = 15356218982400.

The previous prime is 26890008222859. The next prime is 26890008222929. The reversal of 26890008222861 is 16822280009862.

It is a happy number.

It is not a de Polignac number, because 26890008222861 - 2¹ = 26890008222859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26890008222798 and 26890008222807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26890008222761) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1366282941 + ... + 1366302621.

Almost surely, 2^{26890008222861} is an apocalyptic number.

26890008222861 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

26890008222861 is a deficient number, since it is larger than the sum of its proper divisors (17527297725427).

26890008222861 is a wasteful number, since it uses less digits than its factorization.

26890008222861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32002 (or 31999 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 26890008222861 in words is "twenty-six trillion, eight hundred ninety billion, eight million, two hundred twenty-two thousand, eight hundred sixty-one".