212262678725946 has 16 divisors (see below), whose sum is σ = 424557648273504. Its totient is φ = 70748844438384.

The previous prime is 212262678725897. The next prime is 212262678725947. The reversal of 212262678725946 is 649527876262212.

It is a super-2 number, since 2×212262678725946² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212262678725947) 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 7 ways as a sum of consecutive naturals, for example, 1345365445 + ... + 1345523208.

It is an arithmetic number, because the mean of its divisors is an integer number (26534853017094).

Almost surely, 2^{212262678725946} is an apocalyptic number.

212262678725946 is an abundant number, since it is smaller than the sum of its proper divisors (212294969547558).

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

212262678725946 is a wasteful number, since it uses less digits than its factorization.

212262678725946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690901805.

The product of its digits is 487710720, while the sum is 69.

The spelling of 212262678725946 in words is "two hundred twelve trillion, two hundred sixty-two billion, six hundred seventy-eight million, seven hundred twenty-five thousand, nine hundred forty-six".