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920211310205 = 51156209297659
BaseRepresentation
bin11010110010000001101…
…11100100011001111101
310020222020002221000120222
431121000313210121331
5110034043043411310
61542423401551125
7123324460036115
oct15310067443175
93228202830528
10920211310205
11325294327350
1212a414aa54a5
1368a10b7b065
1432777796045
1518e0bad8055
hexd640de467d

920211310205 has 16 divisors (see below), whose sum is σ = 1204665739200. Its totient is φ = 669230434560.

The previous prime is 920211310201. The next prime is 920211310211. The reversal of 920211310205 is 502013112029.

It is a happy number.

It is not a de Polignac number, because 920211310205 - 22 = 920211310201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920211310201) 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, 2942666 + ... + 3240324.

It is an arithmetic number, because the mean of its divisors is an integer number (75291608700).

Almost surely, 2920211310205 is an apocalyptic number.

It is an amenable number.

920211310205 is a deficient number, since it is larger than the sum of its proper divisors (284454428995).

920211310205 is a wasteful number, since it uses less digits than its factorization.

920211310205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353884.

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 920211310205 in words is "nine hundred twenty billion, two hundred eleven million, three hundred ten thousand, two hundred five".

Divisors: 1 5 11 55 56209 281045 297659 618299 1488295 3091495 3274249 16371245 16731114731 83655573655 184042262041 920211310205