Base | Representation |
---|---|
bin | 10010111100110100… |
… | …001100110111000101 |
3 | 1221112001201201202211 |
4 | 102330310030313011 |
5 | 313133000414312 |
6 | 13203025103421 |
7 | 1320143224636 |
oct | 227464146705 |
9 | 57461651684 |
10 | 20347669957 |
11 | 86a180266a |
12 | 3b3a487b71 |
13 | 1bc37263c4 |
14 | db054788d |
15 | 7e15443a7 |
hex | 4bcd0cdc5 |
20347669957 has 2 divisors, whose sum is σ = 20347669958. Its totient is φ = 20347669956.
The previous prime is 20347669933. The next prime is 20347669967. The reversal of 20347669957 is 75996674302.
It is a happy number.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 16582743076 + 3764926881 = 128774^2 + 61359^2 .
It is a cyclic number.
It is not a de Polignac number, because 20347669957 - 227 = 20213452229 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (20347669967) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173834978 + 10173834979.
It is an arithmetic number, because the mean of its divisors is an integer number (10173834979).
Almost surely, 220347669957 is an apocalyptic number.
It is an amenable number.
20347669957 is a deficient number, since it is larger than the sum of its proper divisors (1).
20347669957 is an equidigital number, since it uses as much as digits as its factorization.
20347669957 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 17146080, while the sum is 58.
The spelling of 20347669957 in words is "twenty billion, three hundred forty-seven million, six hundred sixty-nine thousand, nine hundred fifty-seven".
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