656211662142 has 8 divisors (see below), whose sum is σ = 1312423324296. Its totient is φ = 218737220712.

The previous prime is 656211662089. The next prime is 656211662207. The reversal of 656211662142 is 241266112656.

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

656211662142 is an admirable number.

It is a super-2 number, since 2×656211662142² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 656211662094 and 656211662103.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 54684305173 + ... + 54684305184.

It is an arithmetic number, because the mean of its divisors is an integer number (164052915537).

Almost surely, 2^656211662142 is an apocalyptic number.

656211662142 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.

656211662142 is a wasteful number, since it uses less digits than its factorization.

656211662142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109368610362.

The product of its digits is 207360, while the sum is 42.

Adding to 656211662142 its reverse (241266112656), we get a palindrome (897477774798).

The spelling of 656211662142 in words is "six hundred fifty-six billion, two hundred eleven million, six hundred sixty-two thousand, one hundred forty-two".