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13136028668 = 2271313581251
BaseRepresentation
bin11000011101111011…
…11110001111111100
31020220110202101201022
430032331332033330
5203400310404133
610011250403312
7643344254450
oct141675761774
936813671638
1013136028668
115630a44844
122667290538
13131461b539
148c8858660
1551d371998
hex30ef7e3fc

13136028668 has 24 divisors (see below), whose sum is σ = 26472614784. Its totient is φ = 5586750000.

The previous prime is 13136028611. The next prime is 13136028701. The reversal of 13136028668 is 86682063131.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1786958 + ... + 1794293.

It is an arithmetic number, because the mean of its divisors is an integer number (1103025616).

Almost surely, 213136028668 is an apocalyptic number.

It is an amenable number.

13136028668 is an abundant number, since it is smaller than the sum of its proper divisors (13336586116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13136028668 is a wasteful number, since it uses less digits than its factorization.

13136028668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581393 (or 3581391 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 13136028668 in words is "thirteen billion, one hundred thirty-six million, twenty-eight thousand, six hundred sixty-eight".

Divisors: 1 2 4 7 14 28 131 262 524 917 1834 3668 3581251 7162502 14325004 25068757 50137514 100275028 469143881 938287762 1876575524 3284007167 6568014334 13136028668