212561602674 has 32 divisors (see below), whose sum is σ = 428581739520. Its totient is φ = 70277984400.

The previous prime is 212561602639. The next prime is 212561602691. The reversal of 212561602674 is 476206165212.

212561602674 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1536339 + ... + 1668969.

It is an arithmetic number, because the mean of its divisors is an integer number (13393179360).

Almost surely, 2^212561602674 is an apocalyptic number.

212561602674 is an abundant number, since it is smaller than the sum of its proper divisors (216020136846).

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

212561602674 is a wasteful number, since it uses less digits than its factorization.

212561602674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134806.

The product of its (nonzero) digits is 241920, while the sum is 42.

Adding to 212561602674 its reverse (476206165212), we get a palindrome (688767767886).

The spelling of 212561602674 in words is "two hundred twelve billion, five hundred sixty-one million, six hundred two thousand, six hundred seventy-four".