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13531202455 = 52706240491
BaseRepresentation
bin11001001101000010…
…11100001110010111
31021221000100022020111
430212201130032113
5210202441434310
610114404343451
7656213215561
oct144641341627
937830308214
1013531202455
115814013751
1227576a4b87
131378460194
14925124331
15542dd028a
hex32685c397

13531202455 has 4 divisors (see below), whose sum is σ = 16237442952. Its totient is φ = 10824961960.

The previous prime is 13531202453. The next prime is 13531202459. The reversal of 13531202455 is 55420213531.

13531202455 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: 55420213531 = 63799868669.

It is not a de Polignac number, because 13531202455 - 21 = 13531202453 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 (13531202453) 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, 1353120241 + ... + 1353120250.

It is an arithmetic number, because the mean of its divisors is an integer number (4059360738).

Almost surely, 213531202455 is an apocalyptic number.

13531202455 is a deficient number, since it is larger than the sum of its proper divisors (2706240497).

13531202455 is an equidigital number, since it uses as much as digits as its factorization.

13531202455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706240496.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 13531202455 its reverse (55420213531), we get a palindrome (68951415986).

The spelling of 13531202455 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, four hundred fifty-five".

Divisors: 1 5 2706240491 13531202455