165143644631624 has 16 divisors (see below), whose sum is σ = 309644502347520. Its totient is φ = 82571777338960.

The previous prime is 165143644631597. The next prime is 165143644631663. The reversal of 165143644631624 is 426136446341561.

It is a super-2 number, since 2×165143644631624² (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 165143644631624.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14019209 + ... + 22952679.

It is an arithmetic number, because the mean of its divisors is an integer number (19352781396720).

Almost surely, 2^{165143644631624} is an apocalyptic number.

It is an amenable number.

165143644631624 is a deficient number, since it is larger than the sum of its proper divisors (144500857715896).

165143644631624 is a wasteful number, since it uses less digits than its factorization.

165143644631624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11244220 (or 11244216 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 56.

The spelling of 165143644631624 in words is "one hundred sixty-five trillion, one hundred forty-three billion, six hundred forty-four million, six hundred thirty-one thousand, six hundred twenty-four".