655566151665 has 32 divisors (see below), whose sum is σ = 1082801175552. Its totient is φ = 338338080000.

The previous prime is 655566151619. The next prime is 655566151729. The reversal of 655566151665 is 566151665556.

It is not a de Polignac number, because 655566151665 - 2⁹ = 655566151153 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13414575 + ... + 13463355.

It is an arithmetic number, because the mean of its divisors is an integer number (33837536736).

Almost surely, 2^655566151665 is an apocalyptic number.

It is an amenable number.

655566151665 is a deficient number, since it is larger than the sum of its proper divisors (427235023887).

655566151665 is a wasteful number, since it uses less digits than its factorization.

655566151665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77721.

The product of its digits is 24300000, while the sum is 57.

The spelling of 655566151665 in words is "six hundred fifty-five billion, five hundred sixty-six million, one hundred fifty-one thousand, six hundred sixty-five".