656421600141246 has 16 divisors (see below), whose sum is σ = 1314619713417600. Its totient is φ = 218511114524568.

The previous prime is 656421600141169. The next prime is 656421600141271. The reversal of 656421600141246 is 642141006124656.

It is a junction number, because it is equal to n+sod(n) for n = 656421600141195 and 656421600141204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74021375826 + ... + 74021384693.

It is an arithmetic number, because the mean of its divisors is an integer number (82163732088600).

Almost surely, 2^{656421600141246} is an apocalyptic number.

656421600141246 is an abundant number, since it is smaller than the sum of its proper divisors (658198113276354).

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

656421600141246 is a wasteful number, since it uses less digits than its factorization.

656421600141246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148042761263.

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 656421600141246 in words is "six hundred fifty-six trillion, four hundred twenty-one billion, six hundred million, one hundred forty-one thousand, two hundred forty-six".