655870829643 has 32 divisors (see below), whose sum is σ = 1002318059520. Its totient is φ = 423555441120.

The previous prime is 655870829633. The next prime is 655870829671. The reversal of 655870829643 is 346928078556.

It is a happy number.

655870829643 is a `hidden beast` number, since 6 + 5 + 587 + 0 + 8 + 2 + 9 + 6 + 43 = 666.

It is not a de Polignac number, because 655870829643 - 2⁵ = 655870829611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655870829633) 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 in 31 ways as a sum of consecutive naturals, for example, 1219323 + ... + 1672868.

It is an arithmetic number, because the mean of its divisors is an integer number (31322439360).

Almost surely, 2^655870829643 is an apocalyptic number.

655870829643 is a deficient number, since it is larger than the sum of its proper divisors (346447229877).

655870829643 is a wasteful number, since it uses less digits than its factorization.

655870829643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2892464 (or 2892458 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 63.

The spelling of 655870829643 in words is "six hundred fifty-five billion, eight hundred seventy million, eight hundred twenty-nine thousand, six hundred forty-three".