655516660489 has 8 divisors (see below), whose sum is σ = 657219290112. Its totient is φ = 653814369600.

The previous prime is 655516660433. The next prime is 655516660493. The reversal of 655516660489 is 984066615556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 655516660489 - 2⁷ = 655516660361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655516690489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4052172 + ... + 4210834.

It is an arithmetic number, because the mean of its divisors is an integer number (82152411264).

Almost surely, 2^655516660489 is an apocalyptic number.

It is an amenable number.

655516660489 is a deficient number, since it is larger than the sum of its proper divisors (1702629623).

655516660489 is a wasteful number, since it uses less digits than its factorization.

655516660489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169367.

The product of its (nonzero) digits is 46656000, while the sum is 61.

The spelling of 655516660489 in words is "six hundred fifty-five billion, five hundred sixteen million, six hundred sixty thousand, four hundred eighty-nine".