266802076440 has 96 divisors (see below), whose sum is σ = 904807069920. Its totient is φ = 68053860864.

The previous prime is 266802076439. The next prime is 266802076441. The reversal of 266802076440 is 44670208662.

266802076440 is a `hidden beast` number, since 2 + 66 + 80 + 2 + 0 + 76 + 440 = 666.

266802076440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (266802076439) and next prime (266802076441).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266802076441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16102957 + ... + 16119516.

It is an arithmetic number, because the mean of its divisors is an integer number (9425073645).

Almost surely, 2^266802076440 is an apocalyptic number.

266802076440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266802076440 is an abundant number, since it is smaller than the sum of its proper divisors (638004993480).

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

266802076440 is a wasteful number, since it uses less digits than its factorization.

266802076440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32222513 (or 32222506 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 266802076440 in words is "two hundred sixty-six billion, eight hundred two million, seventy-six thousand, four hundred forty".