266773796500 has 48 divisors (see below), whose sum is σ = 590009172480. Its totient is φ = 105358749600.

The previous prime is 266773796467. The next prime is 266773796503. The reversal of 266773796500 is 5697377662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266773796503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3337384 + ... + 3416383.

It is an arithmetic number, because the mean of its divisors is an integer number (12291857760).

Almost surely, 2^266773796500 is an apocalyptic number.

266773796500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266773796500 is an abundant number, since it is smaller than the sum of its proper divisors (323235375980).

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

266773796500 is a wasteful number, since it uses less digits than its factorization.

266773796500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6753865 (or 6753853 counting only the distinct ones).

The product of its (nonzero) digits is 20003760, while the sum is 58.

The spelling of 266773796500 in words is "two hundred sixty-six billion, seven hundred seventy-three million, seven hundred ninety-six thousand, five hundred".