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107665680181 is a prime number
BaseRepresentation
bin110010001000101011…
…1111110011100110101
3101021220101222020120111
41210101113332130311
53230444403231211
6121243321103021
710531025116213
oct1442127763465
9337811866514
10107665680181
114172a519084
1218a49027a71
13a1ca9c9787
1452d517dcb3
152c021e7421
hex19115fe735

107665680181 has 2 divisors, whose sum is σ = 107665680182. Its totient is φ = 107665680180.

The previous prime is 107665680179. The next prime is 107665680209. The reversal of 107665680181 is 181086566701.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86939471025 + 20726209156 = 294855^2 + 143966^2 .

It is a cyclic number.

It is not a de Polignac number, because 107665680181 - 21 = 107665680179 is a prime.

It is a super-2 number, since 2×1076656801812 (a number of 23 digits) contains 22 as substring.

Together with 107665680179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (107665680481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53832840090 + 53832840091.

It is an arithmetic number, because the mean of its divisors is an integer number (53832840091).

Almost surely, 2107665680181 is an apocalyptic number.

It is an amenable number.

107665680181 is a deficient number, since it is larger than the sum of its proper divisors (1).

107665680181 is an equidigital number, since it uses as much as digits as its factorization.

107665680181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 107665680181 in words is "one hundred seven billion, six hundred sixty-five million, six hundred eighty thousand, one hundred eighty-one".