655243844438 has 16 divisors (see below), whose sum is σ = 984260798736. Its totient is φ = 327157215840.

The previous prime is 655243844407. The next prime is 655243844467. The reversal of 655243844438 is 834448342556.

It is a congruent number.

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, 4321520 + ... + 4470572.

It is an arithmetic number, because the mean of its divisors is an integer number (61516299921).

Almost surely, 2^655243844438 is an apocalyptic number.

655243844438 is a deficient number, since it is larger than the sum of its proper divisors (329016954298).

655243844438 is a wasteful number, since it uses less digits than its factorization.

655243844438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152159.

The product of its digits is 44236800, while the sum is 56.

The spelling of 655243844438 in words is "six hundred fifty-five billion, two hundred forty-three million, eight hundred forty-four thousand, four hundred thirty-eight".