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13123554455 = 5115313134367
BaseRepresentation
bin11000011100011100…
…11000110010010111
31020212121021122022102
430032032120302113
5203334112220310
610010123152315
7643133241464
oct141616306227
936777248272
1013123554455
1156249a4780
12266307569b
131311b7174b
148c6d2c66b
1551c20a8a5
hex30e398c97

13123554455 has 32 divisors (see below), whose sum is σ = 17638207488. Its totient is φ = 9292566400.

The previous prime is 13123554427. The next prime is 13123554473. The reversal of 13123554455 is 55445532131.

13123554455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13123554455 - 212 = 13123550359 is a prime.

It is a super-3 number, since 3×131235544553 (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 364682 + ... + 399048.

It is an arithmetic number, because the mean of its divisors is an integer number (551193984).

Almost surely, 213123554455 is an apocalyptic number.

13123554455 is a deficient number, since it is larger than the sum of its proper divisors (4514653033).

13123554455 is a wasteful number, since it uses less digits than its factorization.

13123554455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34567.

The product of its digits is 180000, while the sum is 38.

The spelling of 13123554455 in words is "thirteen billion, one hundred twenty-three million, five hundred fifty-four thousand, four hundred fifty-five".

Divisors: 1 5 11 53 55 131 265 583 655 1441 2915 6943 7205 34367 34715 76373 171835 378037 381865 1821451 1890185 4502077 9107255 20035961 22510385 49522847 100179805 238610081 247614235 1193050405 2624710891 13123554455