165143130655542 has 128 divisors (see below), whose sum is σ = 369648728064000. Its totient is φ = 48842381427840.

The previous prime is 165143130655519. The next prime is 165143130655549. The reversal of 165143130655542 is 245556031341561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165143130655549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 371572009 + ... + 372016187.

It is an arithmetic number, because the mean of its divisors is an integer number (2887880688000).

Almost surely, 2^{165143130655542} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165143130655542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184824364032000).

165143130655542 is an abundant number, since it is smaller than the sum of its proper divisors (204505597408458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165143130655542 is a wasteful number, since it uses less digits than its factorization.

165143130655542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445266.

The product of its (nonzero) digits is 6480000, while the sum is 51.

The spelling of 165143130655542 in words is "one hundred sixty-five trillion, one hundred forty-three billion, one hundred thirty million, six hundred fifty-five thousand, five hundred forty-two".