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188271553205 = 5613831611707
BaseRepresentation
bin1010111101010111011…
…0111110101010110101
3122222221222010212010002
42233111312332222311
511041040004200310
6222254000441045
716413354540401
oct2572566765265
9588858125102
10188271553205
117293342456a
12305a3919185
13149a5505428
149180590101
154d6d993da5
hex2bd5dbeab5

188271553205 has 16 divisors (see below), whose sum is σ = 230229264384. Its totient is φ = 147761206080.

The previous prime is 188271553201. The next prime is 188271553237. The reversal of 188271553205 is 502355172881.

It is not a de Polignac number, because 188271553205 - 22 = 188271553201 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 188271553205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188271553201) 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, 689039 + ... + 922668.

It is an arithmetic number, because the mean of its divisors is an integer number (14389329024).

Almost surely, 2188271553205 is an apocalyptic number.

It is an amenable number.

188271553205 is a deficient number, since it is larger than the sum of its proper divisors (41957711179).

188271553205 is a wasteful number, since it uses less digits than its factorization.

188271553205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612156.

The product of its (nonzero) digits is 672000, while the sum is 47.

The spelling of 188271553205 in words is "one hundred eighty-eight billion, two hundred seventy-one million, five hundred fifty-three thousand, two hundred five".

Divisors: 1 5 61 305 383 1915 23363 116815 1611707 8058535 98314127 491570635 617283781 3086418905 37654310641 188271553205