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13531202452 = 22291075471993
BaseRepresentation
bin11001001101000010…
…11100001110010100
31021221000100022020101
430212201130032110
5210202441434302
610114404343444
7656213215555
oct144641341624
937830308211
1013531202452
115814013749
1227576a4b84
131378460191
1492512432c
15542dd0287
hex32685c394

13531202452 has 48 divisors (see below), whose sum is σ = 24782708160. Its totient is φ = 6456183552.

The previous prime is 13531202449. The next prime is 13531202453. The reversal of 13531202452 is 25420213531.

It is a self number, because there is not a number n which added to its sum of digits gives 13531202452.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6788368 + ... + 6790360.

It is an arithmetic number, because the mean of its divisors is an integer number (516306420).

Almost surely, 213531202452 is an apocalyptic number.

It is an amenable number.

13531202452 is a deficient number, since it is larger than the sum of its proper divisors (11251505708).

13531202452 is a wasteful number, since it uses less digits than its factorization.

13531202452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680 (or 2678 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 13531202452 its reverse (25420213531), we get a palindrome (38951415983).

The spelling of 13531202452 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, four hundred fifty-two".

Divisors: 1 2 4 29 58 107 116 214 428 547 1094 1993 2188 3103 3986 6206 7972 12412 15863 31726 57797 58529 63452 115594 117058 213251 231188 234116 426502 853004 1090171 1697341 2180342 3394682 4360684 6184279 6789364 12368558 24737116 31614959 63229918 116648297 126459836 233296594 466593188 3382800613 6765601226 13531202452