212615560056 has 128 divisors (see below), whose sum is σ = 554676065280. Its totient is φ = 67850804736.

The previous prime is 212615560051. The next prime is 212615560111. The reversal of 212615560056 is 650065516212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212615559996 and 212615560023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212615560051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78949846 + ... + 78952538.

It is an arithmetic number, because the mean of its divisors is an integer number (4333406760).

Almost surely, 2^212615560056 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 212615560056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277338032640).

212615560056 is an abundant number, since it is smaller than the sum of its proper divisors (342060505224).

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

212615560056 is a wasteful number, since it uses less digits than its factorization.

212615560056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4133 (or 4129 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 212615560056 in words is "two hundred twelve billion, six hundred fifteen million, five hundred sixty thousand, fifty-six".