212770715814 has 72 divisors (see below), whose sum is σ = 484954132680. Its totient is φ = 69148533600.

The previous prime is 212770715797. The next prime is 212770715827. The reversal of 212770715814 is 418517077212.

It is a happy number.

212770715814 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212770715814.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 138974229 + ... + 138975759.

It is an arithmetic number, because the mean of its divisors is an integer number (6735474065).

Almost surely, 2^212770715814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212770715814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242477066340).

212770715814 is an abundant number, since it is smaller than the sum of its proper divisors (272183416866).

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

212770715814 is an frugal number, since it uses more digits than its factorization.

212770715814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 45.

The spelling of 212770715814 in words is "two hundred twelve billion, seven hundred seventy million, seven hundred fifteen thousand, eight hundred fourteen".