26217790368 has 192 divisors, whose sum is σ = 87085974528. Its totient is φ = 6708049920.

The previous prime is 26217790351. The next prime is 26217790387. The reversal of 26217790368 is 86309771262.

It is a self number, because there is not a number n which added to its sum of digits gives 26217790368.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 468796 + ... + 521732.

It is an arithmetic number, because the mean of its divisors is an integer number (453572784).

Almost surely, 2^26217790368 is an apocalyptic number.

26217790368 is a gapful number since it is divisible by the number (28) 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 26217790368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43542987264).

26217790368 is an abundant number, since it is smaller than the sum of its proper divisors (60868184160).

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

26217790368 is a wasteful number, since it uses less digits than its factorization.

26217790368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53035 (or 53027 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 26217790368 in words is "twenty-six billion, two hundred seventeen million, seven hundred ninety thousand, three hundred sixty-eight".