656433523234 has 4 divisors (see below), whose sum is σ = 984650284854. Its totient is φ = 328216761616.

The previous prime is 656433523223. The next prime is 656433523261. The reversal of 656433523234 is 432325334656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 379228114225 + 277205409009 = 615815^2 + 526503^2 .

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 as a sum of consecutive naturals, namely, 164108380807 + ... + 164108380810.

Almost surely, 2^656433523234 is an apocalyptic number.

656433523234 is a deficient number, since it is larger than the sum of its proper divisors (328216761620).

656433523234 is a wasteful number, since it uses less digits than its factorization.

656433523234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328216761619.

The product of its digits is 4665600, while the sum is 46.

The spelling of 656433523234 in words is "six hundred fifty-six billion, four hundred thirty-three million, five hundred twenty-three thousand, two hundred thirty-four".