26866460621220 has 384 divisors, whose sum is σ = 84453449084928. Its totient is φ = 6326420889600.

The previous prime is 26866460621219. The next prime is 26866460621233. The reversal of 26866460621220 is 2212606466862.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3533661939 + ... + 3533669541.

It is an arithmetic number, because the mean of its divisors is an integer number (219930856992).

Almost surely, 2^{26866460621220} is an apocalyptic number.

26866460621220 is a gapful number since it is divisible by the number (20) 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 26866460621220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42226724542464).

26866460621220 is an abundant number, since it is smaller than the sum of its proper divisors (57586988463708).

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

26866460621220 is a wasteful number, since it uses less digits than its factorization.

26866460621220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8803 (or 8801 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 51.

The spelling of 26866460621220 in words is "twenty-six trillion, eight hundred sixty-six billion, four hundred sixty million, six hundred twenty-one thousand, two hundred twenty".