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207081075157 = 111071021172321
BaseRepresentation
bin1100000011011011111…
…1100111000111010101
3201210111211120120111021
43000312333213013111
511343100223401112
6235044242041141
720650443044665
oct3006677470725
9653454516437
10207081075157
117a905960830
12341730491b1
13166b2370988
14a0467041a5
1555bee55907
hex3036fe71d5

207081075157 has 16 divisors (see below), whose sum is σ = 228242556864. Its totient is φ = 186312384000.

The previous prime is 207081075139. The next prime is 207081075163. The reversal of 207081075157 is 751570180702.

It is a cyclic number.

It is not a de Polignac number, because 207081075157 - 223 = 207072686549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207081075137) 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, 1115557 + ... + 1287877.

It is an arithmetic number, because the mean of its divisors is an integer number (14265159804).

Almost surely, 2207081075157 is an apocalyptic number.

It is an amenable number.

207081075157 is a deficient number, since it is larger than the sum of its proper divisors (21161481707).

207081075157 is a wasteful number, since it uses less digits than its factorization.

207081075157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173460.

The product of its (nonzero) digits is 137200, while the sum is 43.

The spelling of 207081075157 in words is "two hundred seven billion, eighty-one million, seventy-five thousand, one hundred fifty-seven".

Divisors: 1 11 107 1021 1177 11231 109247 172321 1201717 1895531 18438347 175939741 202821817 1935337151 18825552287 207081075157