655434263656 has 8 divisors (see below), whose sum is σ = 1228939244370. Its totient is φ = 327717131824.

The previous prime is 655434263651. The next prime is 655434263663. The reversal of 655434263656 is 656362434556.

It can be written as a sum of positive squares in only one way, i.e., 384357841156 + 271076422500 = 619966^2 + 520650^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 655434263597 and 655434263606.

It is not an unprimeable number, because it can be changed into a prime (655434263651) by changing a digit.

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, 40964641471 + ... + 40964641486.

Almost surely, 2^655434263656 is an apocalyptic number.

It is an amenable number.

655434263656 is a deficient number, since it is larger than the sum of its proper divisors (573504980714).

655434263656 is a wasteful number, since it uses less digits than its factorization.

655434263656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81929282963 (or 81929282959 counting only the distinct ones).

The product of its digits is 46656000, while the sum is 55.

The spelling of 655434263656 in words is "six hundred fifty-five billion, four hundred thirty-four million, two hundred sixty-three thousand, six hundred fifty-six".