26366563650 has 192 divisors, whose sum is σ = 77652172800. Its totient is φ = 5792881920.

The previous prime is 26366563637. The next prime is 26366563651. The reversal of 26366563650 is 5636566362.

It is a super-3 number, since 3×26366563650³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 26366563650.

It is not an unprimeable number, because it can be changed into a prime (26366563651) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7275739 + ... + 7279361.

It is an arithmetic number, because the mean of its divisors is an integer number (404438400).

Almost surely, 2^26366563650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26366563650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38826086400).

26366563650 is an abundant number, since it is smaller than the sum of its proper divisors (51285609150).

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

26366563650 is a wasteful number, since it uses less digits than its factorization.

26366563650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3913 (or 3908 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 48.

The spelling of 26366563650 in words is "twenty-six billion, three hundred sixty-six million, five hundred sixty-three thousand, six hundred fifty".