1305540550266 has 8 divisors (see below), whose sum is σ = 2611081100544. Its totient is φ = 435180183420.

The previous prime is 1305540550253. The next prime is 1305540550267. The reversal of 1305540550266 is 6620550455031.

It is a sphenic number, since it is the product of 3 distinct primes.

1305540550266 is an admirable number.

It is a super-2 number, since 2×1305540550266² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1305540550267) 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, 108795045850 + ... + 108795045861.

It is an arithmetic number, because the mean of its divisors is an integer number (326385137568).

Almost surely, 2^{1305540550266} is an apocalyptic number.

1305540550266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1305540550266 is a wasteful number, since it uses less digits than its factorization.

1305540550266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217590091716.

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 1305540550266 in words is "one trillion, three hundred five billion, five hundred forty million, five hundred fifty thousand, two hundred sixty-six".