211634522442 has 80 divisors (see below), whose sum is σ = 543695963712. Its totient is φ = 60273720000.

The previous prime is 211634522417. The next prime is 211634522509. The reversal of 211634522442 is 244225436112.

211634522442 is a `hidden beast` number, since 2 + 1 + 163 + 4 + 52 + 2 + 442 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 211634522397 and 211634522406.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 56817 + ... + 653067.

Almost surely, 2^211634522442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211634522442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271847981856).

211634522442 is an abundant number, since it is smaller than the sum of its proper divisors (332061441270).

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

211634522442 is a wasteful number, since it uses less digits than its factorization.

211634522442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596585 (or 596576 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

Adding to 211634522442 its reverse (244225436112), we get a palindrome (455859958554).

It can be divided in two parts, 21163 and 4522442, that added together give a triangular number (4543605 = T₃₀₁₄).

The spelling of 211634522442 in words is "two hundred eleven billion, six hundred thirty-four million, five hundred twenty-two thousand, four hundred forty-two".