266707074816 has 1440 divisors, whose sum is σ = 1060367024640. Its totient is φ = 64712245248.

The previous prime is 266707074793. The next prime is 266707074817. The reversal of 266707074816 is 618470707662.

266707074816 is a `hidden beast` number, since 26 + 6 + 70 + 70 + 7 + 481 + 6 = 666.

It is a super-2 number, since 2×266707074816² (a number of 24 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266707074817) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1541659306 + ... + 1541659478.

Almost surely, 2^266707074816 is an apocalyptic number.

266707074816 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 266707074816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530183512320).

266707074816 is an abundant number, since it is smaller than the sum of its proper divisors (793659949824).

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

266707074816 is a wasteful number, since it uses less digits than its factorization.

266707074816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 54.

The spelling of 266707074816 in words is "two hundred sixty-six billion, seven hundred seven million, seventy-four thousand, eight hundred sixteen".