266016816 has 180 divisors, whose sum is σ = 854898408. Its totient is φ = 76916736.

The previous prime is 266016763. The next prime is 266016857. The reversal of 266016816 is 618610662.

266016816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 413391 + ... + 414033.

Almost surely, 2^266016816 is an apocalyptic number.

266016816 is a gapful number since it is divisible by the number (26) 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 266016816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427449204).

266016816 is an abundant number, since it is smaller than the sum of its proper divisors (588881592).

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

266016816 is a wasteful number, since it uses less digits than its factorization.

266016816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 266016816 is about 16310.0219497093. The cubic root of 266016816 is about 643.1363111736.

The spelling of 266016816 in words is "two hundred sixty-six million, sixteen thousand, eight hundred sixteen".