266365732730680 has 64 divisors (see below), whose sum is σ = 654308570304000. Its totient is φ = 96785929887360.

The previous prime is 266365732730677. The next prime is 266365732730737. The reversal of 266365732730680 is 86037237563662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231727780 + ... + 232874419.

It is an arithmetic number, because the mean of its divisors is an integer number (10223571411000).

Almost surely, 2^{266365732730680} is an apocalyptic number.

266365732730680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266365732730680 is an abundant number, since it is smaller than the sum of its proper divisors (387942837573320).

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

266365732730680 is a wasteful number, since it uses less digits than its factorization.

266365732730680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464603524 (or 464603520 counting only the distinct ones).

The product of its (nonzero) digits is 274337280, while the sum is 64.

The spelling of 266365732730680 in words is "two hundred sixty-six trillion, three hundred sixty-five billion, seven hundred thirty-two million, seven hundred thirty thousand, six hundred eighty".