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16021112117 = 26935949169
BaseRepresentation
bin11101110101110111…
…01100010100110101
31112100112112211011212
432322323230110311
5230302401041432
611205432011205
71105006130453
oct167273542465
945315484155
1016021112117
11688155572a
123131530b05
1316842688ca
14abdaa99d3
1563b7b62b2
hex3baeec535

16021112117 has 4 divisors (see below), whose sum is σ = 16027063980. Its totient is φ = 16015160256.

The previous prime is 16021112059. The next prime is 16021112119. The reversal of 16021112117 is 71121112061.

Adding to 16021112117 its reverse (71121112061), we get a palindrome (87142224178).

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4417729156 + 11603382961 = 66466^2 + 107719^2 .

It is a cyclic number.

It is not a de Polignac number, because 16021112117 - 28 = 16021111861 is a prime.

It is a super-4 number, since 4×160211121174 (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16021112092 and 16021112101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16021112119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2971892 + ... + 2977277.

It is an arithmetic number, because the mean of its divisors is an integer number (4006765995).

Almost surely, 216021112117 is an apocalyptic number.

It is an amenable number.

16021112117 is a deficient number, since it is larger than the sum of its proper divisors (5951863).

16021112117 is an equidigital number, since it uses as much as digits as its factorization.

16021112117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5951862.

The product of its (nonzero) digits is 168, while the sum is 23.

The spelling of 16021112117 in words is "sixteen billion, twenty-one million, one hundred twelve thousand, one hundred seventeen".

Divisors: 1 2693 5949169 16021112117