Base | Representation |
---|---|
bin | 11011111101110011… |
… | …10111010110010101 |
3 | 1102202100111020002212 |
4 | 31332321313112111 |
5 | 221222041000041 |
6 | 10521454043205 |
7 | 1041026615546 |
oct | 157671672625 |
9 | 42670436085 |
10 | 15014000021 |
11 | 6405014489 |
12 | 2ab01a9505 |
13 | 155370b4a7 |
14 | a2602a4cd |
15 | 5cd17c8eb |
hex | 37ee77595 |
15014000021 has 4 divisors (see below), whose sum is σ = 15025649100. Its totient is φ = 15002350944.
The previous prime is 15014000003. The next prime is 15014000033. The reversal of 15014000021 is 12000041051.
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 9599100625 + 5414899396 = 97975^2 + 73586^2 .
It is a cyclic number.
It is not a de Polignac number, because 15014000021 - 210 = 15013998997 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (15014000081) 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 3 ways as a sum of consecutive naturals, for example, 5822606 + ... + 5825183.
It is an arithmetic number, because the mean of its divisors is an integer number (3756412275).
Almost surely, 215014000021 is an apocalyptic number.
It is an amenable number.
15014000021 is a deficient number, since it is larger than the sum of its proper divisors (11649079).
15014000021 is a wasteful number, since it uses less digits than its factorization.
15014000021 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11649078.
The product of its (nonzero) digits is 40, while the sum is 14.
Adding to 15014000021 its reverse (12000041051), we get a palindrome (27014041072).
The spelling of 15014000021 in words is "fifteen billion, fourteen million, twenty-one", and thus it is an aban number.
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