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16544142138 = 232757357023
BaseRepresentation
bin11110110100001101…
…11001001100111010
31120200222201111111010
433122012321030322
5232340300022023
611333354214350
71123656613356
oct173206711472
946628644433
1016544142138
11701a811947
1232587243b6
131738725324
14b2d338466
1566c67d093
hex3da1b933a

16544142138 has 8 divisors (see below), whose sum is σ = 33088284288. Its totient is φ = 5514714044.

The previous prime is 16544142133. The next prime is 16544142163. The reversal of 16544142138 is 83124144561.

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

16544142138 is an admirable number.

It is a super-2 number, since 2×165441421382 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16544142096 and 16544142105.

It is not an unprimeable number, because it can be changed into a prime (16544142133) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1378678506 + ... + 1378678517.

It is an arithmetic number, because the mean of its divisors is an integer number (4136035536).

Almost surely, 216544142138 is an apocalyptic number.

16544142138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16544142138 is a wasteful number, since it uses less digits than its factorization.

16544142138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757357028.

The product of its digits is 92160, while the sum is 39.

Adding to 16544142138 its reverse (83124144561), we get a palindrome (99668286699).

The spelling of 16544142138 in words is "sixteen billion, five hundred forty-four million, one hundred forty-two thousand, one hundred thirty-eight".

Divisors: 1 2 3 6 2757357023 5514714046 8272071069 16544142138