26668203016 has 256 divisors, whose sum is σ = 65165829120. Its totient is φ = 9953280000.

The previous prime is 26668203013. The next prime is 26668203049. The reversal of 26668203016 is 61030286662.

It is a happy number.

It is a super-2 number, since 2×26668203016² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26668203016.

It is not an unprimeable number, because it can be changed into a prime (26668203013) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 176610541 + ... + 176610691.

It is an arithmetic number, because the mean of its divisors is an integer number (254554020).

Almost surely, 2^26668203016 is an apocalyptic number.

26668203016 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26668203016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32582914560).

26668203016 is an abundant number, since it is smaller than the sum of its proper divisors (38497626104).

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

26668203016 is a wasteful number, since it uses less digits than its factorization.

26668203016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

Adding to 26668203016 its reverse (61030286662), we get a palindrome (87698489678).

The spelling of 26668203016 in words is "twenty-six billion, six hundred sixty-eight million, two hundred three thousand, sixteen".