266515013216364 has 192 divisors, whose sum is σ = 716882799360000. Its totient is φ = 76214440373760.

The previous prime is 266515013216351. The next prime is 266515013216429. The reversal of 266515013216364 is 463612310515662.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1145204487 + ... + 1145437185.

It is an arithmetic number, because the mean of its divisors is an integer number (3733764580000).

Almost surely, 2^{266515013216364} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266515013216364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358441399680000).

266515013216364 is an abundant number, since it is smaller than the sum of its proper divisors (450367786143636).

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

266515013216364 is a wasteful number, since it uses less digits than its factorization.

266515013216364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234508 (or 234506 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 51.

The spelling of 266515013216364 in words is "two hundred sixty-six trillion, five hundred fifteen billion, thirteen million, two hundred sixteen thousand, three hundred sixty-four".