210266956081 has 96 divisors (see below), whose sum is σ = 286820352000. Its totient is φ = 152270471808.

The previous prime is 210266956079. The next prime is 210266956091. The reversal of 210266956081 is 180659662012.

It is not a de Polignac number, because 210266956081 - 2¹ = 210266956079 is a prime.

It is a super-2 number, since 2×210266956081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210266956061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 44936100 + ... + 44940778.

It is an arithmetic number, because the mean of its divisors is an integer number (2987712000).

Almost surely, 2^210266956081 is an apocalyptic number.

It is an amenable number.

210266956081 is a deficient number, since it is larger than the sum of its proper divisors (76553395919).

210266956081 is a wasteful number, since it uses less digits than its factorization.

210266956081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4851 (or 4844 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 210266956081 in words is "two hundred ten billion, two hundred sixty-six million, nine hundred fifty-six thousand, eighty-one".