266216216065260 has 96 divisors (see below), whose sum is σ = 751111712854272. Its totient is φ = 70447556424960.

The previous prime is 266216216065259. The next prime is 266216216065277. The reversal of 266216216065260 is 62560612612662.

It is a super-2 number, since 2×266216216065260² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 390985674 + ... + 391665966.

It is an arithmetic number, because the mean of its divisors is an integer number (7824080342232).

Almost surely, 2^{266216216065260} is an apocalyptic number.

266216216065260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266216216065260 is an abundant number, since it is smaller than the sum of its proper divisors (484895496789012).

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

266216216065260 is a wasteful number, since it uses less digits than its factorization.

266216216065260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730223 (or 730221 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 266216216065260 in words is "two hundred sixty-six trillion, two hundred sixteen billion, two hundred sixteen million, sixty-five thousand, two hundred sixty".