165106665542151 has 12 divisors (see below), whose sum is σ = 238612072512528. Its totient is φ = 110013571870944.

The previous prime is 165106665542129. The next prime is 165106665542177. The reversal of 165106665542151 is 151245566601561.

It is not a de Polignac number, because 165106665542151 - 2¹³ = 165106665533959 is a prime.

It is a super-3 number, since 3×165106665542151³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165106665542111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4794856035 + ... + 4794890468.

It is an arithmetic number, because the mean of its divisors is an integer number (19884339376044).

Almost surely, 2^{165106665542151} is an apocalyptic number.

165106665542151 is a deficient number, since it is larger than the sum of its proper divisors (73505406970377).

165106665542151 is a wasteful number, since it uses less digits than its factorization.

165106665542151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9589748422 (or 9589748419 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 54.

The spelling of 165106665542151 in words is "one hundred sixty-five trillion, one hundred six billion, six hundred sixty-five million, five hundred forty-two thousand, one hundred fifty-one".