20345031310266 has 32 divisors (see below), whose sum is σ = 48688963821120. Its totient is φ = 6260009633712.

The previous prime is 20345031310231. The next prime is 20345031310297. The reversal of 20345031310266 is 66201313054302.

20345031310266 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 50 + 31 + 310 + 266 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20345031310266.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14490762340 + ... + 14490763743.

It is an arithmetic number, because the mean of its divisors is an integer number (1521530119410).

Almost surely, 2^{20345031310266} is an apocalyptic number.

20345031310266 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20345031310266 is an abundant number, since it is smaller than the sum of its proper divisors (28343932510854).

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

20345031310266 is a wasteful number, since it uses less digits than its factorization.

20345031310266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28981526107 (or 28981526101 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

Adding to 20345031310266 its reverse (66201313054302), we get a palindrome (86546344364568).

The spelling of 20345031310266 in words is "twenty trillion, three hundred forty-five billion, thirty-one million, three hundred ten thousand, two hundred sixty-six".