655465504788 has 18 divisors (see below), whose sum is σ = 1656871137194. Its totient is φ = 218488501584.

The previous prime is 655465504787. The next prime is 655465504801. The reversal of 655465504788 is 887405564556.

655465504788 is a `hidden beast` number, since 6 + 5 + 5 + 4 + 6 + 550 + 4 + 78 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 653022377604 + 2443127184 = 808098^2 + 49428^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655465504787) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9103687531 + ... + 9103687602.

Almost surely, 2^655465504788 is an apocalyptic number.

It is an amenable number.

655465504788 is an abundant number, since it is smaller than the sum of its proper divisors (1001405632406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

655465504788 is a wasteful number, since it uses less digits than its factorization.

655465504788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18207375143 (or 18207375138 counting only the distinct ones).

The product of its (nonzero) digits is 161280000, while the sum is 63.

The spelling of 655465504788 in words is "six hundred fifty-five billion, four hundred sixty-five million, five hundred four thousand, seven hundred eighty-eight".