165500006656655 has 36 divisors (see below), whose sum is σ = 231892159762200. Its totient is φ = 113283426896640.

The previous prime is 165500006656631. The next prime is 165500006656667. The reversal of 165500006656655 is 556656600005561.

It is not a de Polignac number, because 165500006656655 - 2⁸ = 165500006656399 is a prime.

It is a super-2 number, since 2×165500006656655² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 165500006656655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 473101505 + ... + 473451194.

Almost surely, 2^{165500006656655} is an apocalyptic number.

165500006656655 is a deficient number, since it is larger than the sum of its proper divisors (66392153105545).

165500006656655 is a wasteful number, since it uses less digits than its factorization.

165500006656655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946552760 (or 946552732 counting only the distinct ones).

The product of its (nonzero) digits is 24300000, while the sum is 56.

The spelling of 165500006656655 in words is "one hundred sixty-five trillion, five hundred billion, six million, six hundred fifty-six thousand, six hundred fifty-five".