655501661558 has 8 divisors (see below), whose sum is σ = 999371385840. Its totient is φ = 322377866280.

The previous prime is 655501661537. The next prime is 655501661567. The reversal of 655501661558 is 855166105556.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2686482098 + ... + 2686482341.

It is an arithmetic number, because the mean of its divisors is an integer number (124921423230).

Almost surely, 2^655501661558 is an apocalyptic number.

655501661558 is a deficient number, since it is larger than the sum of its proper divisors (343869724282).

655501661558 is a wasteful number, since it uses less digits than its factorization.

655501661558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5372964502.

The product of its (nonzero) digits is 5400000, while the sum is 53.

The spelling of 655501661558 in words is "six hundred fifty-five billion, five hundred one million, six hundred sixty-one thousand, five hundred fifty-eight".