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210011999995 = 5731193559447
BaseRepresentation
bin1100001110010110110…
…0001100111011111011
3202002002002121222112001
43003211230030323323
511420101032444440
6240251142001431
721113202355240
oct3034554147373
9662062558461
10210011999995
118107a331a66
1234850716277
1316a5b64b625
14a243a895c7
1556e2402b9a
hex30e5b0cefb

210011999995 has 16 divisors (see below), whose sum is σ = 297307312128. Its totient is φ = 139362801120.

The previous prime is 210011999971. The next prime is 210011999999. The reversal of 210011999995 is 599999110012.

It is not a de Polignac number, because 210011999995 - 225 = 209978445563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210011999999) 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, 96778639 + ... + 96780808.

It is an arithmetic number, because the mean of its divisors is an integer number (18581707008).

Almost surely, 2210011999995 is an apocalyptic number.

210011999995 is a deficient number, since it is larger than the sum of its proper divisors (87295312133).

210011999995 is a wasteful number, since it uses less digits than its factorization.

210011999995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193559490.

The product of its (nonzero) digits is 590490, while the sum is 55.

The spelling of 210011999995 in words is "two hundred ten billion, eleven million, nine hundred ninety-nine thousand, nine hundred ninety-five".

Divisors: 1 5 7 31 35 155 217 1085 193559447 967797235 1354916129 6000342857 6774580645 30001714285 42002399999 210011999995