656212630342 has 8 divisors (see below), whose sum is σ = 984335333976. Its totient is φ = 328100852352.

The previous prime is 656212630319. The next prime is 656212630357. The reversal of 656212630342 is 243036212656.

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

It is a junction number, because it is equal to n+sod(n) for n = 656212630295 and 656212630304.

It is a congruent number.

It is an unprimeable number.

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, 2579568 + ... + 2822515.

It is an arithmetic number, because the mean of its divisors is an integer number (123041916747).

Almost surely, 2^656212630342 is an apocalyptic number.

656212630342 is a deficient number, since it is larger than the sum of its proper divisors (328122703634).

656212630342 is a wasteful number, since it uses less digits than its factorization.

656212630342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5462822.

The product of its (nonzero) digits is 311040, while the sum is 40.

Adding to 656212630342 its reverse (243036212656), we get a palindrome (899248842998).

The spelling of 656212630342 in words is "six hundred fifty-six billion, two hundred twelve million, six hundred thirty thousand, three hundred forty-two".