266801761480 has 16 divisors (see below), whose sum is σ = 600303963420. Its totient is φ = 106720704576.

The previous prime is 266801761469. The next prime is 266801761483. The reversal of 266801761480 is 84167108662.

It can be written as a sum of positive squares in 2 ways, for example, as 222986061796 + 43815699684 = 472214^2 + 209322^2 .

It is not an unprimeable number, because it can be changed into a prime (266801761483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3335021979 + ... + 3335022058.

Almost surely, 2^266801761480 is an apocalyptic number.

266801761480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266801761480 is an abundant number, since it is smaller than the sum of its proper divisors (333502201940).

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

266801761480 is a wasteful number, since it uses less digits than its factorization.

266801761480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6670044048 (or 6670044044 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 266801761480 in words is "two hundred sixty-six billion, eight hundred one million, seven hundred sixty-one thousand, four hundred eighty".