266152543616 has 64 divisors (see below), whose sum is σ = 538516278720. Its totient is φ = 131006894592.

The previous prime is 266152543549. The next prime is 266152543661. The reversal of 266152543616 is 616345251662.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2962331 + ... + 3050853.

It is an arithmetic number, because the mean of its divisors is an integer number (8414316855).

Almost surely, 2^266152543616 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 266152543616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269258139360).

266152543616 is an abundant number, since it is smaller than the sum of its proper divisors (272363735104).

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

266152543616 is an equidigital number, since it uses as much as digits as its factorization.

266152543616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88903 (or 88891 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 47.

The spelling of 266152543616 in words is "two hundred sixty-six billion, one hundred fifty-two million, five hundred forty-three thousand, six hundred sixteen".