211648648242 has 8 divisors (see below), whose sum is σ = 423297296496. Its totient is φ = 70549549412.

The previous prime is 211648648217. The next prime is 211648648249. The reversal of 211648648242 is 242846846112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

211648648242 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 211648648191 and 211648648200.

It is not an unprimeable number, because it can be changed into a prime (211648648249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17637387348 + ... + 17637387359.

It is an arithmetic number, because the mean of its divisors is an integer number (52912162062).

Almost surely, 2^211648648242 is an apocalyptic number.

211648648242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

211648648242 is a wasteful number, since it uses less digits than its factorization.

211648648242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35274774712.

The product of its digits is 1179648, while the sum is 48.

The spelling of 211648648242 in words is "two hundred eleven billion, six hundred forty-eight million, six hundred forty-eight thousand, two hundred forty-two".