215045211712 has 112 divisors (see below), whose sum is σ = 472047387120. Its totient is φ = 96739328000.

The previous prime is 215045211709. The next prime is 215045211761. The reversal of 215045211712 is 217112540512.

It can be written as a sum of positive squares in 8 ways, for example, as 103905654336 + 111139557376 = 322344^2 + 333376^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3153012 + ... + 3220492.

Almost surely, 2^215045211712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215045211712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236023693560).

215045211712 is an abundant number, since it is smaller than the sum of its proper divisors (257002175408).

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

215045211712 is a wasteful number, since it uses less digits than its factorization.

215045211712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67640 (or 67630 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 31.

The spelling of 215045211712 in words is "two hundred fifteen billion, forty-five million, two hundred eleven thousand, seven hundred twelve".