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20011201208 = 237613286991
BaseRepresentation
bin10010101000110000…
…101011001010111000
31220122121121100102022
4102220300223022320
5311440331414313
613105405254012
71305616255325
oct225060531270
956577540368
1020011201208
11853988a719
123a65864308
131b6baca17b
14d7b99db4c
157c1c2ec08
hex4a8c2b2b8

20011201208 has 16 divisors (see below), whose sum is σ = 37570318560. Its totient is φ = 9992449600.

The previous prime is 20011201207. The next prime is 20011201213. The reversal of 20011201208 is 80210211002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011201207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1637408 + ... + 1649583.

It is an arithmetic number, because the mean of its divisors is an integer number (2348144910).

Almost surely, 220011201208 is an apocalyptic number.

It is an amenable number.

20011201208 is a deficient number, since it is larger than the sum of its proper divisors (17559117352).

20011201208 is a wasteful number, since it uses less digits than its factorization.

20011201208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287758 (or 3287754 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The spelling of 20011201208 in words is "twenty billion, eleven million, two hundred one thousand, two hundred eight".

Divisors: 1 2 4 8 761 1522 3044 6088 3286991 6573982 13147964 26295928 2501400151 5002800302 10005600604 20011201208