656043025642 has 16 divisors (see below), whose sum is σ = 1018588782240. Its totient is φ = 316526564592.

The previous prime is 656043025559. The next prime is 656043025661. The reversal of 656043025642 is 246520340656.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3182448 + ... + 3382315.

It is an arithmetic number, because the mean of its divisors is an integer number (63661798890).

Almost surely, 2^656043025642 is an apocalyptic number.

656043025642 is a deficient number, since it is larger than the sum of its proper divisors (362545756598).

656043025642 is a wasteful number, since it uses less digits than its factorization.

656043025642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6566517.

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 656043025642 in words is "six hundred fifty-six billion, forty-three million, twenty-five thousand, six hundred forty-two".