165151634432555 has 8 divisors (see below), whose sum is σ = 200973256549344. Its totient is φ = 130260444059200.

The previous prime is 165151634432527. The next prime is 165151634432563. The reversal of 165151634432555 is 555234436151561.

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

It is not a de Polignac number, because 165151634432555 - 2¹⁶ = 165151634367019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165151634432555.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 232607935466 + ... + 232607936175.

It is an arithmetic number, because the mean of its divisors is an integer number (25121657068668).

Almost surely, 2^{165151634432555} is an apocalyptic number.

165151634432555 is a deficient number, since it is larger than the sum of its proper divisors (35821622116789).

165151634432555 is an equidigital number, since it uses as much as digits as its factorization.

165151634432555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465215871717.

The product of its digits is 32400000, while the sum is 56.

The spelling of 165151634432555 in words is "one hundred sixty-five trillion, one hundred fifty-one billion, six hundred thirty-four million, four hundred thirty-two thousand, five hundred fifty-five".