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161606320124 = 22194151863389
BaseRepresentation
bin1001011010000001111…
…1001011111111111100
3120110010121210122221212
42112200133023333330
510121432204220444
6202124012143552
714450520025154
oct2264037137774
9513117718855
10161606320124
116259a611257
12273a1767bb8
1312315ca62c2
147b70db1764
15430c9d919e
hex25a07cbffc

161606320124 has 24 divisors (see below), whose sum is σ = 304956733200. Its totient is φ = 74683278720.

The previous prime is 161606320087. The next prime is 161606320129. The reversal of 161606320124 is 421023606161.

It is a super-2 number, since 2×1616063201242 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161606320129) 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 7 ways as a sum of consecutive naturals, for example, 25928579 + ... + 25934810.

It is an arithmetic number, because the mean of its divisors is an integer number (12706530550).

Almost surely, 2161606320124 is an apocalyptic number.

It is an amenable number.

161606320124 is a deficient number, since it is larger than the sum of its proper divisors (143350413076).

161606320124 is a wasteful number, since it uses less digits than its factorization.

161606320124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51863453 (or 51863451 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 161606320124 its reverse (421023606161), we get a palindrome (582629926285).

The spelling of 161606320124 in words is "one hundred sixty-one billion, six hundred six million, three hundred twenty thousand, one hundred twenty-four".

Divisors: 1 2 4 19 38 41 76 82 164 779 1558 3116 51863389 103726778 207453556 985404391 1970808782 2126398949 3941617564 4252797898 8505595796 40401580031 80803160062 161606320124