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13501233205 = 52700246641
BaseRepresentation
bin11001001001011110…
…00111100000110101
31021211220221201011021
430210233013200311
5210122303430310
610111414141141
7655400405635
oct144457074065
937756851137
1013501233205
1157a9104379
1227496517b1
1313721991b5
149211626c5
155404605da
hex324bc7835

13501233205 has 4 divisors (see below), whose sum is σ = 16201479852. Its totient is φ = 10800986560.

The previous prime is 13501233203. The next prime is 13501233223. The reversal of 13501233205 is 50233210531.

13501233205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50233210531 = 77176172933.

It can be written as a sum of positive squares in 2 ways, for example, as 6835817041 + 6665416164 = 82679^2 + 81642^2 .

It is not a de Polignac number, because 13501233205 - 21 = 13501233203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13501233205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13501233203) by changing a digit.

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, 1350123316 + ... + 1350123325.

It is an arithmetic number, because the mean of its divisors is an integer number (4050369963).

Almost surely, 213501233205 is an apocalyptic number.

It is an amenable number.

13501233205 is a deficient number, since it is larger than the sum of its proper divisors (2700246647).

13501233205 is an equidigital number, since it uses as much as digits as its factorization.

13501233205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700246646.

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 13501233205 its reverse (50233210531), we get a palindrome (63734443736).

The spelling of 13501233205 in words is "thirteen billion, five hundred one million, two hundred thirty-three thousand, two hundred five".

Divisors: 1 5 2700246641 13501233205