212275520718 has 64 divisors (see below), whose sum is σ = 465126658560. Its totient is φ = 64372758912.

The previous prime is 212275520707. The next prime is 212275520749. The reversal of 212275520718 is 817025572212.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212275520718.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127705 + ... + 663972.

It is an arithmetic number, because the mean of its divisors is an integer number (7267604040).

Almost surely, 2^212275520718 is an apocalyptic number.

212275520718 is an abundant number, since it is smaller than the sum of its proper divisors (252851137842).

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

212275520718 is a wasteful number, since it uses less digits than its factorization.

212275520718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791801.

The product of its (nonzero) digits is 156800, while the sum is 42.

The spelling of 212275520718 in words is "two hundred twelve billion, two hundred seventy-five million, five hundred twenty thousand, seven hundred eighteen".