266616105984 has 440 divisors, whose sum is σ = 879760446048. Its totient is φ = 79997829120.

The previous prime is 266616105971. The next prime is 266616106021. The reversal of 266616105984 is 489501616662.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 266616105984.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 32426994 + ... + 32435214.

Almost surely, 2^266616105984 is an apocalyptic number.

266616105984 is a gapful number since it is divisible by the number (24) 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 266616105984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439880223024).

266616105984 is an abundant number, since it is smaller than the sum of its proper divisors (613144340064).

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

266616105984 is a wasteful number, since it uses less digits than its factorization.

266616105984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8293 (or 8266 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 266616105984 in words is "two hundred sixty-six billion, six hundred sixteen million, one hundred five thousand, nine hundred eighty-four".