266091960286560 has 96 divisors (see below), whose sum is σ = 838193683092192. Its totient is φ = 70957516759040.

The previous prime is 266091960286531. The next prime is 266091960286589. The reversal of 266091960286560 is 65682069190662.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (266091960286531) and next prime (266091960286589).

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 266091960286491 and 266091960286500.

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, 108651862 + ... + 111073898.

It is an arithmetic number, because the mean of its divisors is an integer number (8731184198877).

Almost surely, 2^{266091960286560} is an apocalyptic number.

266091960286560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266091960286560 is an abundant number, since it is smaller than the sum of its proper divisors (572101722805632).

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

266091960286560 is a wasteful number, since it uses less digits than its factorization.

266091960286560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2650936 (or 2650928 counting only the distinct ones).

The product of its (nonzero) digits is 100776960, while the sum is 66.

The spelling of 266091960286560 in words is "two hundred sixty-six trillion, ninety-one billion, nine hundred sixty million, two hundred eighty-six thousand, five hundred sixty".