26650223020 has 24 divisors (see below), whose sum is σ = 55986533568. Its totient is φ = 10656076800.

The previous prime is 26650222979. The next prime is 26650223029. The reversal of 26650223020 is 2032205662.

It is a self number, because there is not a number n which added to its sum of digits gives 26650223020.

It is not an unprimeable number, because it can be changed into a prime (26650223029) 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, 196021 + ... + 302860.

It is an arithmetic number, because the mean of its divisors is an integer number (2332772232).

Almost surely, 2^26650223020 is an apocalyptic number.

26650223020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26650223020 is an abundant number, since it is smaller than the sum of its proper divisors (29336310548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26650223020 is a wasteful number, since it uses less digits than its factorization.

26650223020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501561 (or 501559 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 26650223020 its reverse (2032205662), we get a palindrome (28682428682).

The spelling of 26650223020 in words is "twenty-six billion, six hundred fifty million, two hundred twenty-three thousand, twenty".