212054818666290 has 16 divisors (see below), whose sum is σ = 508931564799168. Its totient is φ = 56547951644336.

The previous prime is 212054818666289. The next prime is 212054818666321. The reversal of 212054818666290 is 92666818450212.

212054818666290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212054818666290² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3534246977742 + ... + 3534246977801.

It is an arithmetic number, because the mean of its divisors is an integer number (31808222799948).

Almost surely, 2^{212054818666290} is an apocalyptic number.

212054818666290 is an abundant number, since it is smaller than the sum of its proper divisors (296876746132878).

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

212054818666290 is a wasteful number, since it uses less digits than its factorization.

212054818666290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7068493955553.

The product of its (nonzero) digits is 19906560, while the sum is 60.

The spelling of 212054818666290 in words is "two hundred twelve trillion, fifty-four billion, eight hundred eighteen million, six hundred sixty-six thousand, two hundred ninety".