655421072318487 has 6 divisors (see below), whose sum is σ = 946719326682272. Its totient is φ = 436947381545652.

The previous prime is 655421072318483. The next prime is 655421072318587. The reversal of 655421072318487 is 784813270124556.

655421072318487 is a `hidden beast` number, since 6 + 5 + 5 + 42 + 10 + 72 + 31 + 8 + 487 = 666.

It is not a de Polignac number, because 655421072318487 - 2² = 655421072318483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655421072318483) 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 5 ways as a sum of consecutive naturals, for example, 36412281795463 + ... + 36412281795480.

Almost surely, 2^{655421072318487} is an apocalyptic number.

655421072318487 is a deficient number, since it is larger than the sum of its proper divisors (291298254363785).

655421072318487 is a wasteful number, since it uses less digits than its factorization.

655421072318487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72824563590949 (or 72824563590946 counting only the distinct ones).

The product of its (nonzero) digits is 90316800, while the sum is 63.

The spelling of 655421072318487 in words is "six hundred fifty-five trillion, four hundred twenty-one billion, seventy-two million, three hundred eighteen thousand, four hundred eighty-seven".