215065055056 has 60 divisors (see below), whose sum is σ = 440373962080. Its totient is φ = 101467054080.

The previous prime is 215065055017. The next prime is 215065055071. The reversal of 215065055056 is 650550560512.

It is a super-2 number, since 2×215065055056² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20073541 + ... + 20084251.

Almost surely, 2^215065055056 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 215065055056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220186981040).

215065055056 is an abundant number, since it is smaller than the sum of its proper divisors (225308907024).

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

215065055056 is a wasteful number, since it uses less digits than its factorization.

215065055056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11252 (or 10989 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 215065055056 in words is "two hundred fifteen billion, sixty-five million, fifty-five thousand, fifty-six".