212245427678 has 8 divisors (see below), whose sum is σ = 321520301640. Its totient is φ = 105071993800.

The previous prime is 212245427663. The next prime is 212245427747. The reversal of 212245427678 is 876724542212.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525359768 + ... + 525360171.

It is an arithmetic number, because the mean of its divisors is an integer number (40190037705).

Almost surely, 2^212245427678 is an apocalyptic number.

212245427678 is a deficient number, since it is larger than the sum of its proper divisors (109274873962).

212245427678 is a wasteful number, since it uses less digits than its factorization.

212245427678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050720042.

The product of its digits is 3010560, while the sum is 50.

The spelling of 212245427678 in words is "two hundred twelve billion, two hundred forty-five million, four hundred twenty-seven thousand, six hundred seventy-eight".